Home / 154,031.53-212,561.17-86,049.48

Finding the Fourth Proportional to 154,031.53, 212,561.17 and 86,049.48

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Solution

The fourth proportional to 154,031.53, 212,561.17 and 86,049.48 is: 118,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,031.53 : 212,561.17 = 86,049.48 : x
  2. Step 2: Convert to fraction form
    154,031.53/212,561.17 = 86,049.48/x
  3. Step 3: Cross multiply
    154,031.53x = 212,561.17 × 86,049.48
  4. Step 4: Simplify right side
    154,031.53x = 18,290,778,146.69
  5. Step 5: Solve for x
    x = 18,290,778,146.69/154,031.53
  6. Step 6: Final answer
    x = 118,746.97

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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.