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Finding the Fourth Proportional to 123,188.66, 169,988.64 and 69,482.06

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Solution

The fourth proportional to 123,188.66, 169,988.64 and 69,482.06 is: 95,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,188.66 : 169,988.64 = 69,482.06 : x
  2. Step 2: Convert to fraction form
    123,188.66/169,988.64 = 69,482.06/x
  3. Step 3: Cross multiply
    123,188.66x = 169,988.64 × 69,482.06
  4. Step 4: Simplify right side
    123,188.66x = 11,811,160,883.80
  5. Step 5: Solve for x
    x = 11,811,160,883.80/123,188.66
  6. Step 6: Final answer
    x = 95,878.64

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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.