Home / 129,420.95-178,573.35-75,695.48

Finding the Fourth Proportional to 129,420.95, 178,573.35 and 75,695.48

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Solution

The fourth proportional to 129,420.95, 178,573.35 and 75,695.48 is: 104,443.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,420.95 : 178,573.35 = 75,695.48 : x
  2. Step 2: Convert to fraction form
    129,420.95/178,573.35 = 75,695.48/x
  3. Step 3: Cross multiply
    129,420.95x = 178,573.35 × 75,695.48
  4. Step 4: Simplify right side
    129,420.95x = 13,517,194,550.59
  5. Step 5: Solve for x
    x = 13,517,194,550.59/129,420.95
  6. Step 6: Final answer
    x = 104,443.64

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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.