Home / 142,386.72-213,631.26-66,552.80

Finding the Fourth Proportional to 142,386.72, 213,631.26 and 66,552.80

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Solution

The fourth proportional to 142,386.72, 213,631.26 and 66,552.80 is: 99,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,386.72 : 213,631.26 = 66,552.80 : x
  2. Step 2: Convert to fraction form
    142,386.72/213,631.26 = 66,552.80/x
  3. Step 3: Cross multiply
    142,386.72x = 213,631.26 × 66,552.80
  4. Step 4: Simplify right side
    142,386.72x = 14,217,758,520.53
  5. Step 5: Solve for x
    x = 14,217,758,520.53/142,386.72
  6. Step 6: Final answer
    x = 99,853.12

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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.