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Finding the Fourth Proportional to 108,050.72, 148,931.52 and 72,227.66

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Solution

The fourth proportional to 108,050.72, 148,931.52 and 72,227.66 is: 99,554.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,050.72 : 148,931.52 = 72,227.66 : x
  2. Step 2: Convert to fraction form
    108,050.72/148,931.52 = 72,227.66/x
  3. Step 3: Cross multiply
    108,050.72x = 148,931.52 × 72,227.66
  4. Step 4: Simplify right side
    108,050.72x = 10,756,974,445.19
  5. Step 5: Solve for x
    x = 10,756,974,445.19/108,050.72
  6. Step 6: Final answer
    x = 99,554.87

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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.