Home / 99,733.19-137,631.14-56,712.68

Finding the Fourth Proportional to 99,733.19, 137,631.14 and 56,712.68

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Solution

The fourth proportional to 99,733.19, 137,631.14 and 56,712.68 is: 78,263.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,733.19 : 137,631.14 = 56,712.68 : x
  2. Step 2: Convert to fraction form
    99,733.19/137,631.14 = 56,712.68/x
  3. Step 3: Cross multiply
    99,733.19x = 137,631.14 × 56,712.68
  4. Step 4: Simplify right side
    99,733.19x = 7,805,431,286.71
  5. Step 5: Solve for x
    x = 7,805,431,286.71/99,733.19
  6. Step 6: Final answer
    x = 78,263.13

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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.