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Finding the Fourth Proportional to 187,407, 281,139.73 and 61,017.40

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Solution

The fourth proportional to 187,407, 281,139.73 and 61,017.40 is: 91,535.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,407 : 281,139.73 = 61,017.40 : x
  2. Step 2: Convert to fraction form
    187,407/281,139.73 = 61,017.40/x
  3. Step 3: Cross multiply
    187,407x = 281,139.73 × 61,017.40
  4. Step 4: Simplify right side
    187,407x = 17,154,415,560.18
  5. Step 5: Solve for x
    x = 17,154,415,560.18/187,407
  6. Step 6: Final answer
    x = 91,535.62

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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.