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Finding the Fourth Proportional to 100,963.20, 151,444.80 and 48,345.60

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Solution

The fourth proportional to 100,963.20, 151,444.80 and 48,345.60 is: 72,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,963.20 : 151,444.80 = 48,345.60 : x
  2. Step 2: Convert to fraction form
    100,963.20/151,444.80 = 48,345.60/x
  3. Step 3: Cross multiply
    100,963.20x = 151,444.80 × 48,345.60
  4. Step 4: Simplify right side
    100,963.20x = 7,321,689,722.88
  5. Step 5: Solve for x
    x = 7,321,689,722.88/100,963.20
  6. Step 6: Final answer
    x = 72,518.40

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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.