Home / 129,570.40-194,647.20-126,071.20

Finding the Fourth Proportional to 129,570.40, 194,647.20 and 126,071.20

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Solution

The fourth proportional to 129,570.40, 194,647.20 and 126,071.20 is: 189,390.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,570.40 : 194,647.20 = 126,071.20 : x
  2. Step 2: Convert to fraction form
    129,570.40/194,647.20 = 126,071.20/x
  3. Step 3: Cross multiply
    129,570.40x = 194,647.20 × 126,071.20
  4. Step 4: Simplify right side
    129,570.40x = 24,539,406,080.64
  5. Step 5: Solve for x
    x = 24,539,406,080.64/129,570.40
  6. Step 6: Final answer
    x = 189,390.53

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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.