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Finding the Fourth Proportional to 108,155.52, 149,085.12 and 99,465.76

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Solution

The fourth proportional to 108,155.52, 149,085.12 and 99,465.76 is: 137,106.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,155.52 : 149,085.12 = 99,465.76 : x
  2. Step 2: Convert to fraction form
    108,155.52/149,085.12 = 99,465.76/x
  3. Step 3: Cross multiply
    108,155.52x = 149,085.12 × 99,465.76
  4. Step 4: Simplify right side
    108,155.52x = 14,828,864,765.49
  5. Step 5: Solve for x
    x = 14,828,864,765.49/108,155.52
  6. Step 6: Final answer
    x = 137,106.87

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1.5x scale

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.