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Finding the Fourth Proportional to 186,575.52, 279,809.28 and 81,369.12

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Solution

The fourth proportional to 186,575.52, 279,809.28 and 81,369.12 is: 122,030.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,575.52 : 279,809.28 = 81,369.12 : x
  2. Step 2: Convert to fraction form
    186,575.52/279,809.28 = 81,369.12/x
  3. Step 3: Cross multiply
    186,575.52x = 279,809.28 × 81,369.12
  4. Step 4: Simplify right side
    186,575.52x = 22,767,834,881.43
  5. Step 5: Solve for x
    x = 22,767,834,881.43/186,575.52
  6. Step 6: Final answer
    x = 122,030.13

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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.