Home / 115,236.02-159,158.12-76,928.87

Finding the Fourth Proportional to 115,236.02, 159,158.12 and 76,928.87

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Solution

The fourth proportional to 115,236.02, 159,158.12 and 76,928.87 is: 106,250.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,236.02 : 159,158.12 = 76,928.87 : x
  2. Step 2: Convert to fraction form
    115,236.02/159,158.12 = 76,928.87/x
  3. Step 3: Cross multiply
    115,236.02x = 159,158.12 × 76,928.87
  4. Step 4: Simplify right side
    115,236.02x = 12,243,853,142.49
  5. Step 5: Solve for x
    x = 12,243,853,142.49/115,236.02
  6. Step 6: Final answer
    x = 106,250.23

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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.