Home / 126,126.40-189,184.13-31,354.60

Finding the Fourth Proportional to 126,126.40, 189,184.13 and 31,354.60

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Solution

The fourth proportional to 126,126.40, 189,184.13 and 31,354.60 is: 47,030.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,126.40 : 189,184.13 = 31,354.60 : x
  2. Step 2: Convert to fraction form
    126,126.40/189,184.13 = 31,354.60/x
  3. Step 3: Cross multiply
    126,126.40x = 189,184.13 × 31,354.60
  4. Step 4: Simplify right side
    126,126.40x = 5,931,791,619.80
  5. Step 5: Solve for x
    x = 5,931,791,619.80/126,126.40
  6. Step 6: Final answer
    x = 47,030.53

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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.