Home / 100,877.32-139,305.18-63,217.18

Finding the Fourth Proportional to 100,877.32, 139,305.18 and 63,217.18

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Solution

The fourth proportional to 100,877.32, 139,305.18 and 63,217.18 is: 87,298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,877.32 : 139,305.18 = 63,217.18 : x
  2. Step 2: Convert to fraction form
    100,877.32/139,305.18 = 63,217.18/x
  3. Step 3: Cross multiply
    100,877.32x = 139,305.18 × 63,217.18
  4. Step 4: Simplify right side
    100,877.32x = 8,806,480,638.99
  5. Step 5: Solve for x
    x = 8,806,480,638.99/100,877.32
  6. Step 6: Final answer
    x = 87,298.92

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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.