Home / 154,013.68-212,536.74-86,031.76

Finding the Fourth Proportional to 154,013.68, 212,536.74 and 86,031.76

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Solution

The fourth proportional to 154,013.68, 212,536.74 and 86,031.76 is: 118,722.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,013.68 : 212,536.74 = 86,031.76 : x
  2. Step 2: Convert to fraction form
    154,013.68/212,536.74 = 86,031.76/x
  3. Step 3: Cross multiply
    154,013.68x = 212,536.74 × 86,031.76
  4. Step 4: Simplify right side
    154,013.68x = 18,284,909,806.86
  5. Step 5: Solve for x
    x = 18,284,909,806.86/154,013.68
  6. Step 6: Final answer
    x = 118,722.63

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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.