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Finding the Fourth Proportional to 123,071.50, 169,838.67 and 66,482.88

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Solution

The fourth proportional to 123,071.50, 169,838.67 and 66,482.88 is: 91,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,071.50 : 169,838.67 = 66,482.88 : x
  2. Step 2: Convert to fraction form
    123,071.50/169,838.67 = 66,482.88/x
  3. Step 3: Cross multiply
    123,071.50x = 169,838.67 × 66,482.88
  4. Step 4: Simplify right side
    123,071.50x = 11,291,363,916.97
  5. Step 5: Solve for x
    x = 11,291,363,916.97/123,071.50
  6. Step 6: Final answer
    x = 91,746.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.