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Finding the Fourth Proportional to 110,565.48, 152,643.60 and 72,905.40

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Solution

The fourth proportional to 110,565.48, 152,643.60 and 72,905.40 is: 100,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,565.48 : 152,643.60 = 72,905.40 : x
  2. Step 2: Convert to fraction form
    110,565.48/152,643.60 = 72,905.40/x
  3. Step 3: Cross multiply
    110,565.48x = 152,643.60 × 72,905.40
  4. Step 4: Simplify right side
    110,565.48x = 11,128,542,715.44
  5. Step 5: Solve for x
    x = 11,128,542,715.44/110,565.48
  6. Step 6: Final answer
    x = 100,651.15

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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.