Home / 142,931.15-197,218.91-82,479.74

Finding the Fourth Proportional to 142,931.15, 197,218.91 and 82,479.74

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Solution

The fourth proportional to 142,931.15, 197,218.91 and 82,479.74 is: 113,806.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,931.15 : 197,218.91 = 82,479.74 : x
  2. Step 2: Convert to fraction form
    142,931.15/197,218.91 = 82,479.74/x
  3. Step 3: Cross multiply
    142,931.15x = 197,218.91 × 82,479.74
  4. Step 4: Simplify right side
    142,931.15x = 16,266,564,419.88
  5. Step 5: Solve for x
    x = 16,266,564,419.88/142,931.15
  6. Step 6: Final answer
    x = 113,806.99

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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.