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Finding the Fourth Proportional to 186,472.80, 279,818.55 and 68,156.10

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Solution

The fourth proportional to 186,472.80, 279,818.55 and 68,156.10 is: 102,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,472.80 : 279,818.55 = 68,156.10 : x
  2. Step 2: Convert to fraction form
    186,472.80/279,818.55 = 68,156.10/x
  3. Step 3: Cross multiply
    186,472.80x = 279,818.55 × 68,156.10
  4. Step 4: Simplify right side
    186,472.80x = 19,071,341,075.66
  5. Step 5: Solve for x
    x = 19,071,341,075.66/186,472.80
  6. Step 6: Final answer
    x = 102,274.12

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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.