Home / 129,538.60-194,307.90-74,140.20

Finding the Fourth Proportional to 129,538.60, 194,307.90 and 74,140.20

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Solution

The fourth proportional to 129,538.60, 194,307.90 and 74,140.20 is: 111,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,538.60 : 194,307.90 = 74,140.20 : x
  2. Step 2: Convert to fraction form
    129,538.60/194,307.90 = 74,140.20/x
  3. Step 3: Cross multiply
    129,538.60x = 194,307.90 × 74,140.20
  4. Step 4: Simplify right side
    129,538.60x = 14,406,026,567.58
  5. Step 5: Solve for x
    x = 14,406,026,567.58/129,538.60
  6. Step 6: Final answer
    x = 111,210.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.