Home / 154,115.61-212,675.29-86,132.85

Finding the Fourth Proportional to 154,115.61, 212,675.29 and 86,132.85

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Solution

The fourth proportional to 154,115.61, 212,675.29 and 86,132.85 is: 118,860.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,115.61 : 212,675.29 = 86,132.85 : x
  2. Step 2: Convert to fraction form
    154,115.61/212,675.29 = 86,132.85/x
  3. Step 3: Cross multiply
    154,115.61x = 212,675.29 × 86,132.85
  4. Step 4: Simplify right side
    154,115.61x = 18,318,328,852.28
  5. Step 5: Solve for x
    x = 18,318,328,852.28/154,115.61
  6. Step 6: Final answer
    x = 118,860.96

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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.