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Finding the Fourth Proportional to 158,602.32, 218,870.17 and 90,640.08

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Solution

The fourth proportional to 158,602.32, 218,870.17 and 90,640.08 is: 125,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,602.32 : 218,870.17 = 90,640.08 : x
  2. Step 2: Convert to fraction form
    158,602.32/218,870.17 = 90,640.08/x
  3. Step 3: Cross multiply
    158,602.32x = 218,870.17 × 90,640.08
  4. Step 4: Simplify right side
    158,602.32x = 19,838,409,718.41
  5. Step 5: Solve for x
    x = 19,838,409,718.41/158,602.32
  6. Step 6: Final answer
    x = 125,082.72

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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.