Home / 153,239.62-211,480.20-85,271.76

Finding the Fourth Proportional to 153,239.62, 211,480.20 and 85,271.76

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Solution

The fourth proportional to 153,239.62, 211,480.20 and 85,271.76 is: 117,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,239.62 : 211,480.20 = 85,271.76 : x
  2. Step 2: Convert to fraction form
    153,239.62/211,480.20 = 85,271.76/x
  3. Step 3: Cross multiply
    153,239.62x = 211,480.20 × 85,271.76
  4. Step 4: Simplify right side
    153,239.62x = 18,033,288,859.15
  5. Step 5: Solve for x
    x = 18,033,288,859.15/153,239.62
  6. Step 6: Final answer
    x = 117,680.33

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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.