Home / 83,133,041.20-124,699,561.80-81,715,865.20

Finding the Fourth Proportional to 83,133,041.20, 124,699,561.80 and 81,715,865.20

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Solution

The fourth proportional to 83,133,041.20, 124,699,561.80 and 81,715,865.20 is: 122,573,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,133,041.20 : 124,699,561.80 = 81,715,865.20 : x
  2. Step 2: Convert to fraction form
    83,133,041.20/124,699,561.80 = 81,715,865.20/x
  3. Step 3: Cross multiply
    83,133,041.20x = 124,699,561.80 × 81,715,865.20
  4. Step 4: Simplify right side
    83,133,041.20x = 10,189,932,582,547,870
  5. Step 5: Solve for x
    x = 10,189,932,582,547,870/83,133,041.20
  6. Step 6: Final answer
    x = 122,573,797.80

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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.