Home / 159,931.74-220,718.82-91,970.70

Finding the Fourth Proportional to 159,931.74, 220,718.82 and 91,970.70

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Solution

The fourth proportional to 159,931.74, 220,718.82 and 91,970.70 is: 126,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,931.74 : 220,718.82 = 91,970.70 : x
  2. Step 2: Convert to fraction form
    159,931.74/220,718.82 = 91,970.70/x
  3. Step 3: Cross multiply
    159,931.74x = 220,718.82 × 91,970.70
  4. Step 4: Simplify right side
    159,931.74x = 20,299,664,378.57
  5. Step 5: Solve for x
    x = 20,299,664,378.57/159,931.74
  6. Step 6: Final answer
    x = 126,927.05

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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.