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Finding the Fourth Proportional to 187,215.52, 258,492.72 and 115,693.60

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Solution

The fourth proportional to 187,215.52, 258,492.72 and 115,693.60 is: 159,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,215.52 : 258,492.72 = 115,693.60 : x
  2. Step 2: Convert to fraction form
    187,215.52/258,492.72 = 115,693.60/x
  3. Step 3: Cross multiply
    187,215.52x = 258,492.72 × 115,693.60
  4. Step 4: Simplify right side
    187,215.52x = 29,905,953,350.59
  5. Step 5: Solve for x
    x = 29,905,953,350.59/187,215.52
  6. Step 6: Final answer
    x = 159,740.78

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1.5x scale

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.