Home / 142,008.62-195,973.09-78,350.72

Finding the Fourth Proportional to 142,008.62, 195,973.09 and 78,350.72

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Solution

The fourth proportional to 142,008.62, 195,973.09 and 78,350.72 is: 108,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,008.62 : 195,973.09 = 78,350.72 : x
  2. Step 2: Convert to fraction form
    142,008.62/195,973.09 = 78,350.72/x
  3. Step 3: Cross multiply
    142,008.62x = 195,973.09 × 78,350.72
  4. Step 4: Simplify right side
    142,008.62x = 15,354,631,526.38
  5. Step 5: Solve for x
    x = 15,354,631,526.38/142,008.62
  6. Step 6: Final answer
    x = 108,124.65

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1.5x scale

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.