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Finding the Fourth Proportional to 118,436.80, 163,444.80 and 70,680.88

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Solution

The fourth proportional to 118,436.80, 163,444.80 and 70,680.88 is: 97,540.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,436.80 : 163,444.80 = 70,680.88 : x
  2. Step 2: Convert to fraction form
    118,436.80/163,444.80 = 70,680.88/x
  3. Step 3: Cross multiply
    118,436.80x = 163,444.80 × 70,680.88
  4. Step 4: Simplify right side
    118,436.80x = 11,552,422,295.42
  5. Step 5: Solve for x
    x = 11,552,422,295.42/118,436.80
  6. Step 6: Final answer
    x = 97,540.82

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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.