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Finding the Fourth Proportional to 113,909.60, 157,197.60 and 63,608.64

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Solution

The fourth proportional to 113,909.60, 157,197.60 and 63,608.64 is: 87,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,909.60 : 157,197.60 = 63,608.64 : x
  2. Step 2: Convert to fraction form
    113,909.60/157,197.60 = 63,608.64/x
  3. Step 3: Cross multiply
    113,909.60x = 157,197.60 × 63,608.64
  4. Step 4: Simplify right side
    113,909.60x = 9,999,125,547.26
  5. Step 5: Solve for x
    x = 9,999,125,547.26/113,909.60
  6. Step 6: Final answer
    x = 87,781.24

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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.