Home / 99,449.34-137,205.45-56,423.76

Finding the Fourth Proportional to 99,449.34, 137,205.45 and 56,423.76

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Solution

The fourth proportional to 99,449.34, 137,205.45 and 56,423.76 is: 77,845.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,449.34 : 137,205.45 = 56,423.76 : x
  2. Step 2: Convert to fraction form
    99,449.34/137,205.45 = 56,423.76/x
  3. Step 3: Cross multiply
    99,449.34x = 137,205.45 × 56,423.76
  4. Step 4: Simplify right side
    99,449.34x = 7,741,647,381.49
  5. Step 5: Solve for x
    x = 7,741,647,381.49/99,449.34
  6. Step 6: Final answer
    x = 77,845.14

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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.