Home / 142,703.10-213,908.85-83,508.30

Finding the Fourth Proportional to 142,703.10, 213,908.85 and 83,508.30

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Solution

The fourth proportional to 142,703.10, 213,908.85 and 83,508.30 is: 125,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,703.10 : 213,908.85 = 83,508.30 : x
  2. Step 2: Convert to fraction form
    142,703.10/213,908.85 = 83,508.30/x
  3. Step 3: Cross multiply
    142,703.10x = 213,908.85 × 83,508.30
  4. Step 4: Simplify right side
    142,703.10x = 17,863,164,418.46
  5. Step 5: Solve for x
    x = 17,863,164,418.46/142,703.10
  6. Step 6: Final answer
    x = 125,177.13

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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.