Home / 142,988.46-197,347.68-79,346.76

Finding the Fourth Proportional to 142,988.46, 197,347.68 and 79,346.76

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Solution

The fourth proportional to 142,988.46, 197,347.68 and 79,346.76 is: 109,511.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,988.46 : 197,347.68 = 79,346.76 : x
  2. Step 2: Convert to fraction form
    142,988.46/197,347.68 = 79,346.76/x
  3. Step 3: Cross multiply
    142,988.46x = 197,347.68 × 79,346.76
  4. Step 4: Simplify right side
    142,988.46x = 15,658,899,001.52
  5. Step 5: Solve for x
    x = 15,658,899,001.52/142,988.46
  6. Step 6: Final answer
    x = 109,511.63

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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.