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Finding the Fourth Proportional to 156,152.85, 215,490.69 and 84,532.86

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Solution

The fourth proportional to 156,152.85, 215,490.69 and 84,532.86 is: 116,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,152.85 : 215,490.69 = 84,532.86 : x
  2. Step 2: Convert to fraction form
    156,152.85/215,490.69 = 84,532.86/x
  3. Step 3: Cross multiply
    156,152.85x = 215,490.69 × 84,532.86
  4. Step 4: Simplify right side
    156,152.85x = 18,216,044,329.07
  5. Step 5: Solve for x
    x = 18,216,044,329.07/156,152.85
  6. Step 6: Final answer
    x = 116,655.22

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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.