Home / 100,585.20-138,807.36-55,264.35

Finding the Fourth Proportional to 100,585.20, 138,807.36 and 55,264.35

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Solution

The fourth proportional to 100,585.20, 138,807.36 and 55,264.35 is: 76,264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,585.20 : 138,807.36 = 55,264.35 : x
  2. Step 2: Convert to fraction form
    100,585.20/138,807.36 = 55,264.35/x
  3. Step 3: Cross multiply
    100,585.20x = 138,807.36 × 55,264.35
  4. Step 4: Simplify right side
    100,585.20x = 7,671,098,525.62
  5. Step 5: Solve for x
    x = 7,671,098,525.62/100,585.20
  6. Step 6: Final answer
    x = 76,264.68

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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.