Home / 142,542.23-213,642.70-66,538.51

Finding the Fourth Proportional to 142,542.23, 213,642.70 and 66,538.51

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Solution

The fourth proportional to 142,542.23, 213,642.70 and 66,538.51 is: 99,728.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,542.23 : 213,642.70 = 66,538.51 : x
  2. Step 2: Convert to fraction form
    142,542.23/213,642.70 = 66,538.51/x
  3. Step 3: Cross multiply
    142,542.23x = 213,642.70 × 66,538.51
  4. Step 4: Simplify right side
    142,542.23x = 14,215,466,930.38
  5. Step 5: Solve for x
    x = 14,215,466,930.38/142,542.23
  6. Step 6: Final answer
    x = 99,728.11

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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.