Home / 115,330.72-159,066.84-72,873.76

Finding the Fourth Proportional to 115,330.72, 159,066.84 and 72,873.76

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Solution

The fourth proportional to 115,330.72, 159,066.84 and 72,873.76 is: 100,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,330.72 : 159,066.84 = 72,873.76 : x
  2. Step 2: Convert to fraction form
    115,330.72/159,066.84 = 72,873.76/x
  3. Step 3: Cross multiply
    115,330.72x = 159,066.84 × 72,873.76
  4. Step 4: Simplify right side
    115,330.72x = 11,591,798,722.12
  5. Step 5: Solve for x
    x = 11,591,798,722.12/115,330.72
  6. Step 6: Final answer
    x = 100,509.20

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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.