Home / 128,122,368.48-176,807,988-69,383,689.38

Finding the Fourth Proportional to 128,122,368.48, 176,807,988 and 69,383,689.38

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Solution

The fourth proportional to 128,122,368.48, 176,807,988 and 69,383,689.38 is: 95,749,014.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,368.48 : 176,807,988 = 69,383,689.38 : x
  2. Step 2: Convert to fraction form
    128,122,368.48/176,807,988 = 69,383,689.38/x
  3. Step 3: Cross multiply
    128,122,368.48x = 176,807,988 × 69,383,689.38
  4. Step 4: Simplify right side
    128,122,368.48x = 12,267,590,519,294,766
  5. Step 5: Solve for x
    x = 12,267,590,519,294,766/128,122,368.48
  6. Step 6: Final answer
    x = 95,749,014.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.