Home / 156,041.65-215,337.45-84,421.72

Finding the Fourth Proportional to 156,041.65, 215,337.45 and 84,421.72

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Solution

The fourth proportional to 156,041.65, 215,337.45 and 84,421.72 is: 116,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,041.65 : 215,337.45 = 84,421.72 : x
  2. Step 2: Convert to fraction form
    156,041.65/215,337.45 = 84,421.72/x
  3. Step 3: Cross multiply
    156,041.65x = 215,337.45 × 84,421.72
  4. Step 4: Simplify right side
    156,041.65x = 18,179,157,909.41
  5. Step 5: Solve for x
    x = 18,179,157,909.41/156,041.65
  6. Step 6: Final answer
    x = 116,501.96

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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.