Home / 82,044.40-123,066.60-78,545.20

Finding the Fourth Proportional to 82,044.40, 123,066.60 and 78,545.20

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Solution

The fourth proportional to 82,044.40, 123,066.60 and 78,545.20 is: 117,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,044.40 : 123,066.60 = 78,545.20 : x
  2. Step 2: Convert to fraction form
    82,044.40/123,066.60 = 78,545.20/x
  3. Step 3: Cross multiply
    82,044.40x = 123,066.60 × 78,545.20
  4. Step 4: Simplify right side
    82,044.40x = 9,666,290,710.32
  5. Step 5: Solve for x
    x = 9,666,290,710.32/82,044.40
  6. Step 6: Final answer
    x = 117,817.80

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1.5x scale

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.