Home / 115,344.72-159,086.16-72,887.76

Finding the Fourth Proportional to 115,344.72, 159,086.16 and 72,887.76

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Solution

The fourth proportional to 115,344.72, 159,086.16 and 72,887.76 is: 100,528.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,344.72 : 159,086.16 = 72,887.76 : x
  2. Step 2: Convert to fraction form
    115,344.72/159,086.16 = 72,887.76/x
  3. Step 3: Cross multiply
    115,344.72x = 159,086.16 × 72,887.76
  4. Step 4: Simplify right side
    115,344.72x = 11,595,433,849.40
  5. Step 5: Solve for x
    x = 11,595,433,849.40/115,344.72
  6. Step 6: Final answer
    x = 100,528.52

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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.