Home / 152,642.30-229,072.80-86,011.70

Finding the Fourth Proportional to 152,642.30, 229,072.80 and 86,011.70

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Solution

The fourth proportional to 152,642.30, 229,072.80 and 86,011.70 is: 129,079.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,642.30 : 229,072.80 = 86,011.70 : x
  2. Step 2: Convert to fraction form
    152,642.30/229,072.80 = 86,011.70/x
  3. Step 3: Cross multiply
    152,642.30x = 229,072.80 × 86,011.70
  4. Step 4: Simplify right side
    152,642.30x = 19,702,940,951.76
  5. Step 5: Solve for x
    x = 19,702,940,951.76/152,642.30
  6. Step 6: Final answer
    x = 129,079.17

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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.