Home / 130,516.62-180,199.65-100,247.76

Finding the Fourth Proportional to 130,516.62, 180,199.65 and 100,247.76

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Solution

The fourth proportional to 130,516.62, 180,199.65 and 100,247.76 is: 138,408.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,516.62 : 180,199.65 = 100,247.76 : x
  2. Step 2: Convert to fraction form
    130,516.62/180,199.65 = 100,247.76/x
  3. Step 3: Cross multiply
    130,516.62x = 180,199.65 × 100,247.76
  4. Step 4: Simplify right side
    130,516.62x = 18,064,611,265.28
  5. Step 5: Solve for x
    x = 18,064,611,265.28/130,516.62
  6. Step 6: Final answer
    x = 138,408.51

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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.