Home / 156,041.68-215,337.42-84,421.72

Finding the Fourth Proportional to 156,041.68, 215,337.42 and 84,421.72

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Solution

The fourth proportional to 156,041.68, 215,337.42 and 84,421.72 is: 116,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,041.68 : 215,337.42 = 84,421.72 : x
  2. Step 2: Convert to fraction form
    156,041.68/215,337.42 = 84,421.72/x
  3. Step 3: Cross multiply
    156,041.68x = 215,337.42 × 84,421.72
  4. Step 4: Simplify right side
    156,041.68x = 18,179,155,376.76
  5. Step 5: Solve for x
    x = 18,179,155,376.76/156,041.68
  6. Step 6: Final answer
    x = 116,501.92

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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.