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Finding the Fourth Proportional to 186,988.96, 280,275.67 and 142,468.93

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Solution

The fourth proportional to 186,988.96, 280,275.67 and 142,468.93 is: 213,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,988.96 : 280,275.67 = 142,468.93 : x
  2. Step 2: Convert to fraction form
    186,988.96/280,275.67 = 142,468.93/x
  3. Step 3: Cross multiply
    186,988.96x = 280,275.67 × 142,468.93
  4. Step 4: Simplify right side
    186,988.96x = 39,930,574,809.93
  5. Step 5: Solve for x
    x = 39,930,574,809.93/186,988.96
  6. Step 6: Final answer
    x = 213,545.09

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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.