Home / 115,338.72-159,077.88-72,881.76

Finding the Fourth Proportional to 115,338.72, 159,077.88 and 72,881.76

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Solution

The fourth proportional to 115,338.72, 159,077.88 and 72,881.76 is: 100,520.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,338.72 : 159,077.88 = 72,881.76 : x
  2. Step 2: Convert to fraction form
    115,338.72/159,077.88 = 72,881.76/x
  3. Step 3: Cross multiply
    115,338.72x = 159,077.88 × 72,881.76
  4. Step 4: Simplify right side
    115,338.72x = 11,593,875,871.47
  5. Step 5: Solve for x
    x = 11,593,875,871.47/115,338.72
  6. Step 6: Final answer
    x = 100,520.24

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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.