Home / 124,217.64-171,534.12-78,910.20

Finding the Fourth Proportional to 124,217.64, 171,534.12 and 78,910.20

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Solution

The fourth proportional to 124,217.64, 171,534.12 and 78,910.20 is: 108,968.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,217.64 : 171,534.12 = 78,910.20 : x
  2. Step 2: Convert to fraction form
    124,217.64/171,534.12 = 78,910.20/x
  3. Step 3: Cross multiply
    124,217.64x = 171,534.12 × 78,910.20
  4. Step 4: Simplify right side
    124,217.64x = 13,535,791,716.02
  5. Step 5: Solve for x
    x = 13,535,791,716.02/124,217.64
  6. Step 6: Final answer
    x = 108,968.35

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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.