Home / 129,927,829.86-194,903,724.87-42,489,800.40

Finding the Fourth Proportional to 129,927,829.86, 194,903,724.87 and 42,489,800.40

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Solution

The fourth proportional to 129,927,829.86, 194,903,724.87 and 42,489,800.40 is: 63,738,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,927,829.86 : 194,903,724.87 = 42,489,800.40 : x
  2. Step 2: Convert to fraction form
    129,927,829.86/194,903,724.87 = 42,489,800.40/x
  3. Step 3: Cross multiply
    129,927,829.86x = 194,903,724.87 × 42,489,800.40
  4. Step 4: Simplify right side
    129,927,829.86x = 8,281,420,366,942,816
  5. Step 5: Solve for x
    x = 8,281,420,366,942,816/129,927,829.86
  6. Step 6: Final answer
    x = 63,738,618.40

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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.