Home / 142,746.06-197,082-91,781.68

Finding the Fourth Proportional to 142,746.06, 197,082 and 91,781.68

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Solution

The fourth proportional to 142,746.06, 197,082 and 91,781.68 is: 126,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,746.06 : 197,082 = 91,781.68 : x
  2. Step 2: Convert to fraction form
    142,746.06/197,082 = 91,781.68/x
  3. Step 3: Cross multiply
    142,746.06x = 197,082 × 91,781.68
  4. Step 4: Simplify right side
    142,746.06x = 18,088,517,057.76
  5. Step 5: Solve for x
    x = 18,088,517,057.76/142,746.06
  6. Step 6: Final answer
    x = 126,718.15

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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.