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Finding the Fourth Proportional to 100,988.64, 151,436.16 and 48,340.32

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Solution

The fourth proportional to 100,988.64, 151,436.16 and 48,340.32 is: 72,488.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,988.64 : 151,436.16 = 48,340.32 : x
  2. Step 2: Convert to fraction form
    100,988.64/151,436.16 = 48,340.32/x
  3. Step 3: Cross multiply
    100,988.64x = 151,436.16 × 48,340.32
  4. Step 4: Simplify right side
    100,988.64x = 7,320,472,433.97
  5. Step 5: Solve for x
    x = 7,320,472,433.97/100,988.64
  6. Step 6: Final answer
    x = 72,488.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.