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Finding the Fourth Proportional to 115,480.64, 159,362.08 and 65,181.76

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Solution

The fourth proportional to 115,480.64, 159,362.08 and 65,181.76 is: 89,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,480.64 : 159,362.08 = 65,181.76 : x
  2. Step 2: Convert to fraction form
    115,480.64/159,362.08 = 65,181.76/x
  3. Step 3: Cross multiply
    115,480.64x = 159,362.08 × 65,181.76
  4. Step 4: Simplify right side
    115,480.64x = 10,387,500,851.66
  5. Step 5: Solve for x
    x = 10,387,500,851.66/115,480.64
  6. Step 6: Final answer
    x = 89,950.15

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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.