Home / 145,631.80-218,167.83-89,307.66

Finding the Fourth Proportional to 145,631.80, 218,167.83 and 89,307.66

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Solution

The fourth proportional to 145,631.80, 218,167.83 and 89,307.66 is: 133,789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,631.80 : 218,167.83 = 89,307.66 : x
  2. Step 2: Convert to fraction form
    145,631.80/218,167.83 = 89,307.66/x
  3. Step 3: Cross multiply
    145,631.80x = 218,167.83 × 89,307.66
  4. Step 4: Simplify right side
    145,631.80x = 19,484,059,202.71
  5. Step 5: Solve for x
    x = 19,484,059,202.71/145,631.80
  6. Step 6: Final answer
    x = 133,789.87

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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.