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Finding the Fourth Proportional to 156,000.48, 215,262.15 and 88,013.49

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Solution

The fourth proportional to 156,000.48, 215,262.15 and 88,013.49 is: 121,448.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,000.48 : 215,262.15 = 88,013.49 : x
  2. Step 2: Convert to fraction form
    156,000.48/215,262.15 = 88,013.49/x
  3. Step 3: Cross multiply
    156,000.48x = 215,262.15 × 88,013.49
  4. Step 4: Simplify right side
    156,000.48x = 18,945,971,949.12
  5. Step 5: Solve for x
    x = 18,945,971,949.12/156,000.48
  6. Step 6: Final answer
    x = 121,448.17

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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.