Home / 142,803.30-197,132.49-102,713.70

Finding the Fourth Proportional to 142,803.30, 197,132.49 and 102,713.70

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Solution

The fourth proportional to 142,803.30, 197,132.49 and 102,713.70 is: 141,790.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,803.30 : 197,132.49 = 102,713.70 : x
  2. Step 2: Convert to fraction form
    142,803.30/197,132.49 = 102,713.70/x
  3. Step 3: Cross multiply
    142,803.30x = 197,132.49 × 102,713.70
  4. Step 4: Simplify right side
    142,803.30x = 20,248,207,438.11
  5. Step 5: Solve for x
    x = 20,248,207,438.11/142,803.30
  6. Step 6: Final answer
    x = 141,790.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.