Home / 123,420.13-170,320.60-66,831.51

Finding the Fourth Proportional to 123,420.13, 170,320.60 and 66,831.51

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Solution

The fourth proportional to 123,420.13, 170,320.60 and 66,831.51 is: 92,227.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,420.13 : 170,320.60 = 66,831.51 : x
  2. Step 2: Convert to fraction form
    123,420.13/170,320.60 = 66,831.51/x
  3. Step 3: Cross multiply
    123,420.13x = 170,320.60 × 66,831.51
  4. Step 4: Simplify right side
    123,420.13x = 11,382,782,882.11
  5. Step 5: Solve for x
    x = 11,382,782,882.11/123,420.13
  6. Step 6: Final answer
    x = 92,227.93

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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.