Home / 96,619.20-144,928.80-65,126.40

Finding the Fourth Proportional to 96,619.20, 144,928.80 and 65,126.40

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Solution

The fourth proportional to 96,619.20, 144,928.80 and 65,126.40 is: 97,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,619.20 : 144,928.80 = 65,126.40 : x
  2. Step 2: Convert to fraction form
    96,619.20/144,928.80 = 65,126.40/x
  3. Step 3: Cross multiply
    96,619.20x = 144,928.80 × 65,126.40
  4. Step 4: Simplify right side
    96,619.20x = 9,438,691,000.32
  5. Step 5: Solve for x
    x = 9,438,691,000.32/96,619.20
  6. Step 6: Final answer
    x = 97,689.60

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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.