Home / 90,189.64-124,511.40-67,520.48

Finding the Fourth Proportional to 90,189.64, 124,511.40 and 67,520.48

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Solution

The fourth proportional to 90,189.64, 124,511.40 and 67,520.48 is: 93,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,189.64 : 124,511.40 = 67,520.48 : x
  2. Step 2: Convert to fraction form
    90,189.64/124,511.40 = 67,520.48/x
  3. Step 3: Cross multiply
    90,189.64x = 124,511.40 × 67,520.48
  4. Step 4: Simplify right side
    90,189.64x = 8,407,069,493.47
  5. Step 5: Solve for x
    x = 8,407,069,493.47/90,189.64
  6. Step 6: Final answer
    x = 93,215.47

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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.