Home / 142,366.68-196,448.76-78,695.64

Finding the Fourth Proportional to 142,366.68, 196,448.76 and 78,695.64

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Solution

The fourth proportional to 142,366.68, 196,448.76 and 78,695.64 is: 108,590.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,366.68 : 196,448.76 = 78,695.64 : x
  2. Step 2: Convert to fraction form
    142,366.68/196,448.76 = 78,695.64/x
  3. Step 3: Cross multiply
    142,366.68x = 196,448.76 × 78,695.64
  4. Step 4: Simplify right side
    142,366.68x = 15,459,660,895.41
  5. Step 5: Solve for x
    x = 15,459,660,895.41/142,366.68
  6. Step 6: Final answer
    x = 108,590.44

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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.