Home / 261,649,077.20-392,531,066.04-77,402,129.36

Finding the Fourth Proportional to 261,649,077.20, 392,531,066.04 and 77,402,129.36

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Solution

The fourth proportional to 261,649,077.20, 392,531,066.04 and 77,402,129.36 is: 116,120,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,649,077.20 : 392,531,066.04 = 77,402,129.36 : x
  2. Step 2: Convert to fraction form
    261,649,077.20/392,531,066.04 = 77,402,129.36/x
  3. Step 3: Cross multiply
    261,649,077.20x = 392,531,066.04 × 77,402,129.36
  4. Step 4: Simplify right side
    261,649,077.20x = 30,382,740,351,446,784
  5. Step 5: Solve for x
    x = 30,382,740,351,446,784/261,649,077.20
  6. Step 6: Final answer
    x = 116,120,189.21

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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.