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Finding the Fourth Proportional to 187,909.17, 281,487.86 and 112,988.01

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Solution

The fourth proportional to 187,909.17, 281,487.86 and 112,988.01 is: 169,256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,909.17 : 281,487.86 = 112,988.01 : x
  2. Step 2: Convert to fraction form
    187,909.17/281,487.86 = 112,988.01/x
  3. Step 3: Cross multiply
    187,909.17x = 281,487.86 × 112,988.01
  4. Step 4: Simplify right side
    187,909.17x = 31,804,754,054.90
  5. Step 5: Solve for x
    x = 31,804,754,054.90/187,909.17
  6. Step 6: Final answer
    x = 169,256.00

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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.