Home / 115,323.17-159,156.92-72,309.47

Finding the Fourth Proportional to 115,323.17, 159,156.92 and 72,309.47

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Solution

The fourth proportional to 115,323.17, 159,156.92 and 72,309.47 is: 99,793.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,323.17 : 159,156.92 = 72,309.47 : x
  2. Step 2: Convert to fraction form
    115,323.17/159,156.92 = 72,309.47/x
  3. Step 3: Cross multiply
    115,323.17x = 159,156.92 × 72,309.47
  4. Step 4: Simplify right side
    115,323.17x = 11,508,551,917.02
  5. Step 5: Solve for x
    x = 11,508,551,917.02/115,323.17
  6. Step 6: Final answer
    x = 99,793.93

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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.