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Finding the Fourth Proportional to 113,992.32, 157,308.80 and 63,690.88

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Solution

The fourth proportional to 113,992.32, 157,308.80 and 63,690.88 is: 87,893.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,992.32 : 157,308.80 = 63,690.88 : x
  2. Step 2: Convert to fraction form
    113,992.32/157,308.80 = 63,690.88/x
  3. Step 3: Cross multiply
    113,992.32x = 157,308.80 × 63,690.88
  4. Step 4: Simplify right side
    113,992.32x = 10,019,135,903.74
  5. Step 5: Solve for x
    x = 10,019,135,903.74/113,992.32
  6. Step 6: Final answer
    x = 87,893.08

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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.