Home / 205,076,509,971.60-307,369,876,944.60-85,693,603,731.60

Finding the Fourth Proportional to 205,076,509,971.60, 307,369,876,944.60 and 85,693,603,731.60

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Solution

The fourth proportional to 205,076,509,971.60, 307,369,876,944.60 and 85,693,603,731.60 is: 128,438,076,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,076,509,971.60 : 307,369,876,944.60 = 85,693,603,731.60 : x
  2. Step 2: Convert to fraction form
    205,076,509,971.60/307,369,876,944.60 = 85,693,603,731.60/x
  3. Step 3: Cross multiply
    205,076,509,971.60x = 307,369,876,944.60 × 85,693,603,731.60
  4. Step 4: Simplify right side
    205,076,509,971.60x = 26,339,632,433,921,209,139,200
  5. Step 5: Solve for x
    x = 26,339,632,433,921,209,139,200/205,076,509,971.60
  6. Step 6: Final answer
    x = 128,438,076,294.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.