Home / 100,319.92-138,443.04-55,002.24

Finding the Fourth Proportional to 100,319.92, 138,443.04 and 55,002.24

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Solution

The fourth proportional to 100,319.92, 138,443.04 and 55,002.24 is: 75,903.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,319.92 : 138,443.04 = 55,002.24 : x
  2. Step 2: Convert to fraction form
    100,319.92/138,443.04 = 55,002.24/x
  3. Step 3: Cross multiply
    100,319.92x = 138,443.04 × 55,002.24
  4. Step 4: Simplify right side
    100,319.92x = 7,614,677,312.41
  5. Step 5: Solve for x
    x = 7,614,677,312.41/100,319.92
  6. Step 6: Final answer
    x = 75,903.94

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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.