Home / 123,065.43-169,831.08-72,108.33

Finding the Fourth Proportional to 123,065.43, 169,831.08 and 72,108.33

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Solution

The fourth proportional to 123,065.43, 169,831.08 and 72,108.33 is: 99,509.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,065.43 : 169,831.08 = 72,108.33 : x
  2. Step 2: Convert to fraction form
    123,065.43/169,831.08 = 72,108.33/x
  3. Step 3: Cross multiply
    123,065.43x = 169,831.08 × 72,108.33
  4. Step 4: Simplify right side
    123,065.43x = 12,246,235,560.90
  5. Step 5: Solve for x
    x = 12,246,235,560.90/123,065.43
  6. Step 6: Final answer
    x = 99,509.96

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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.