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Finding the Fourth Proportional to 156,152.86, 215,490.90 and 84,532.83

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Solution

The fourth proportional to 156,152.86, 215,490.90 and 84,532.83 is: 116,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,152.86 : 215,490.90 = 84,532.83 : x
  2. Step 2: Convert to fraction form
    156,152.86/215,490.90 = 84,532.83/x
  3. Step 3: Cross multiply
    156,152.86x = 215,490.90 × 84,532.83
  4. Step 4: Simplify right side
    156,152.86x = 18,216,054,649.66
  5. Step 5: Solve for x
    x = 18,216,054,649.66/156,152.86
  6. Step 6: Final answer
    x = 116,655.28

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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.