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Finding the Fourth Proportional to 186,279.67, 279,422.12 and 53,159.94

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Solution

The fourth proportional to 186,279.67, 279,422.12 and 53,159.94 is: 79,740.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,279.67 : 279,422.12 = 53,159.94 : x
  2. Step 2: Convert to fraction form
    186,279.67/279,422.12 = 53,159.94/x
  3. Step 3: Cross multiply
    186,279.67x = 279,422.12 × 53,159.94
  4. Step 4: Simplify right side
    186,279.67x = 14,854,063,266.77
  5. Step 5: Solve for x
    x = 14,854,063,266.77/186,279.67
  6. Step 6: Final answer
    x = 79,740.66

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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.