Home / 154,032.12-212,543.28-86,040.42

Finding the Fourth Proportional to 154,032.12, 212,543.28 and 86,040.42

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Solution

The fourth proportional to 154,032.12, 212,543.28 and 86,040.42 is: 118,724.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,032.12 : 212,543.28 = 86,040.42 : x
  2. Step 2: Convert to fraction form
    154,032.12/212,543.28 = 86,040.42/x
  3. Step 3: Cross multiply
    154,032.12x = 212,543.28 × 86,040.42
  4. Step 4: Simplify right side
    154,032.12x = 18,287,313,079.38
  5. Step 5: Solve for x
    x = 18,287,313,079.38/154,032.12
  6. Step 6: Final answer
    x = 118,724.02

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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.