Home / 158,021.32-218,215.74-101,531.92

Finding the Fourth Proportional to 158,021.32, 218,215.74 and 101,531.92

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Solution

The fourth proportional to 158,021.32, 218,215.74 and 101,531.92 is: 140,208.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,021.32 : 218,215.74 = 101,531.92 : x
  2. Step 2: Convert to fraction form
    158,021.32/218,215.74 = 101,531.92/x
  3. Step 3: Cross multiply
    158,021.32x = 218,215.74 × 101,531.92
  4. Step 4: Simplify right side
    158,021.32x = 22,155,863,056.42
  5. Step 5: Solve for x
    x = 22,155,863,056.42/158,021.32
  6. Step 6: Final answer
    x = 140,208.06

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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.