Home / 85,834,116.30-128,751,174.45-76,428,266.70

Finding the Fourth Proportional to 85,834,116.30, 128,751,174.45 and 76,428,266.70

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Solution

The fourth proportional to 85,834,116.30, 128,751,174.45 and 76,428,266.70 is: 114,642,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,834,116.30 : 128,751,174.45 = 76,428,266.70 : x
  2. Step 2: Convert to fraction form
    85,834,116.30/128,751,174.45 = 76,428,266.70/x
  3. Step 3: Cross multiply
    85,834,116.30x = 128,751,174.45 × 76,428,266.70
  4. Step 4: Simplify right side
    85,834,116.30x = 9,840,229,098,802,826
  5. Step 5: Solve for x
    x = 9,840,229,098,802,826/85,834,116.30
  6. Step 6: Final answer
    x = 114,642,400.05

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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.