Home / 424,209,967.92-636,406,539.62-129,128,162.31

Finding the Fourth Proportional to 424,209,967.92, 636,406,539.62 and 129,128,162.31

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Solution

The fourth proportional to 424,209,967.92, 636,406,539.62 and 129,128,162.31 is: 193,720,122.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,209,967.92 : 636,406,539.62 = 129,128,162.31 : x
  2. Step 2: Convert to fraction form
    424,209,967.92/636,406,539.62 = 129,128,162.31/x
  3. Step 3: Cross multiply
    424,209,967.92x = 636,406,539.62 × 129,128,162.31
  4. Step 4: Simplify right side
    424,209,967.92x = 82,178,006,942,551,168
  5. Step 5: Solve for x
    x = 82,178,006,942,551,168/424,209,967.92
  6. Step 6: Final answer
    x = 193,720,122.48

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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.