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Finding the Fourth Proportional to 159,853.70, 220,597.04 and 87,256.31

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Solution

The fourth proportional to 159,853.70, 220,597.04 and 87,256.31 is: 120,413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,853.70 : 220,597.04 = 87,256.31 : x
  2. Step 2: Convert to fraction form
    159,853.70/220,597.04 = 87,256.31/x
  3. Step 3: Cross multiply
    159,853.70x = 220,597.04 × 87,256.31
  4. Step 4: Simplify right side
    159,853.70x = 19,248,482,168.06
  5. Step 5: Solve for x
    x = 19,248,482,168.06/159,853.70
  6. Step 6: Final answer
    x = 120,413.12

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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.