Home / 128,382,985.86-177,168,520.47-73,380,023.34

Finding the Fourth Proportional to 128,382,985.86, 177,168,520.47 and 73,380,023.34

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Solution

The fourth proportional to 128,382,985.86, 177,168,520.47 and 73,380,023.34 is: 101,264,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,382,985.86 : 177,168,520.47 = 73,380,023.34 : x
  2. Step 2: Convert to fraction form
    128,382,985.86/177,168,520.47 = 73,380,023.34/x
  3. Step 3: Cross multiply
    128,382,985.86x = 177,168,520.47 × 73,380,023.34
  4. Step 4: Simplify right side
    128,382,985.86x = 13,000,630,167,201,868
  5. Step 5: Solve for x
    x = 13,000,630,167,201,868/128,382,985.86
  6. Step 6: Final answer
    x = 101,264,432.20

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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.