Home / 121,861.52-182,533.08-71,887.76

Finding the Fourth Proportional to 121,861.52, 182,533.08 and 71,887.76

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Solution

The fourth proportional to 121,861.52, 182,533.08 and 71,887.76 is: 107,678.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,861.52 : 182,533.08 = 71,887.76 : x
  2. Step 2: Convert to fraction form
    121,861.52/182,533.08 = 71,887.76/x
  3. Step 3: Cross multiply
    121,861.52x = 182,533.08 × 71,887.76
  4. Step 4: Simplify right side
    121,861.52x = 13,121,894,247.10
  5. Step 5: Solve for x
    x = 13,121,894,247.10/121,861.52
  6. Step 6: Final answer
    x = 107,678.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.