Home / 142,349.97-196,444.14-78,688.83

Finding the Fourth Proportional to 142,349.97, 196,444.14 and 78,688.83

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Solution

The fourth proportional to 142,349.97, 196,444.14 and 78,688.83 is: 108,591.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,349.97 : 196,444.14 = 78,688.83 : x
  2. Step 2: Convert to fraction form
    142,349.97/196,444.14 = 78,688.83/x
  3. Step 3: Cross multiply
    142,349.97x = 196,444.14 × 78,688.83
  4. Step 4: Simplify right side
    142,349.97x = 15,457,959,536.96
  5. Step 5: Solve for x
    x = 15,457,959,536.96/142,349.97
  6. Step 6: Final answer
    x = 108,591.24

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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.