Home / 100,955.22-139,311.54-60,645.12

Finding the Fourth Proportional to 100,955.22, 139,311.54 and 60,645.12

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Solution

The fourth proportional to 100,955.22, 139,311.54 and 60,645.12 is: 83,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,955.22 : 139,311.54 = 60,645.12 : x
  2. Step 2: Convert to fraction form
    100,955.22/139,311.54 = 60,645.12/x
  3. Step 3: Cross multiply
    100,955.22x = 139,311.54 × 60,645.12
  4. Step 4: Simplify right side
    100,955.22x = 8,448,565,060.68
  5. Step 5: Solve for x
    x = 8,448,565,060.68/100,955.22
  6. Step 6: Final answer
    x = 83,686.26

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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.