Home / 142,929.45-197,254.76-79,287.75

Finding the Fourth Proportional to 142,929.45, 197,254.76 and 79,287.75

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Solution

The fourth proportional to 142,929.45, 197,254.76 and 79,287.75 is: 109,423.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,929.45 : 197,254.76 = 79,287.75 : x
  2. Step 2: Convert to fraction form
    142,929.45/197,254.76 = 79,287.75/x
  3. Step 3: Cross multiply
    142,929.45x = 197,254.76 × 79,287.75
  4. Step 4: Simplify right side
    142,929.45x = 15,639,885,700.75
  5. Step 5: Solve for x
    x = 15,639,885,700.75/142,929.45
  6. Step 6: Final answer
    x = 109,423.82

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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.