Home / 136,070.56-187,920.84-121,228.16

Finding the Fourth Proportional to 136,070.56, 187,920.84 and 121,228.16

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Solution

The fourth proportional to 136,070.56, 187,920.84 and 121,228.16 is: 167,422.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,070.56 : 187,920.84 = 121,228.16 : x
  2. Step 2: Convert to fraction form
    136,070.56/187,920.84 = 121,228.16/x
  3. Step 3: Cross multiply
    136,070.56x = 187,920.84 × 121,228.16
  4. Step 4: Simplify right side
    136,070.56x = 22,781,297,658.85
  5. Step 5: Solve for x
    x = 22,781,297,658.85/136,070.56
  6. Step 6: Final answer
    x = 167,422.68

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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.