Home / 129,194.64-178,248.53-75,440.88

Finding the Fourth Proportional to 129,194.64, 178,248.53 and 75,440.88

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Solution

The fourth proportional to 129,194.64, 178,248.53 and 75,440.88 is: 104,085.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,194.64 : 178,248.53 = 75,440.88 : x
  2. Step 2: Convert to fraction form
    129,194.64/178,248.53 = 75,440.88/x
  3. Step 3: Cross multiply
    129,194.64x = 178,248.53 × 75,440.88
  4. Step 4: Simplify right side
    129,194.64x = 13,447,226,150.51
  5. Step 5: Solve for x
    x = 13,447,226,150.51/129,194.64
  6. Step 6: Final answer
    x = 104,085.02

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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.