Home / 142,577.28-196,754.27-78,913.71

Finding the Fourth Proportional to 142,577.28, 196,754.27 and 78,913.71

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Solution

The fourth proportional to 142,577.28, 196,754.27 and 78,913.71 is: 108,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,577.28 : 196,754.27 = 78,913.71 : x
  2. Step 2: Convert to fraction form
    142,577.28/196,754.27 = 78,913.71/x
  3. Step 3: Cross multiply
    142,577.28x = 196,754.27 × 78,913.71
  4. Step 4: Simplify right side
    142,577.28x = 15,526,609,009.47
  5. Step 5: Solve for x
    x = 15,526,609,009.47/142,577.28
  6. Step 6: Final answer
    x = 108,899.60

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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.