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Finding the Fourth Proportional to 112,102.91, 154,614.53 and 71,820.42

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Solution

The fourth proportional to 112,102.91, 154,614.53 and 71,820.42 is: 99,056.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,102.91 : 154,614.53 = 71,820.42 : x
  2. Step 2: Convert to fraction form
    112,102.91/154,614.53 = 71,820.42/x
  3. Step 3: Cross multiply
    112,102.91x = 154,614.53 × 71,820.42
  4. Step 4: Simplify right side
    112,102.91x = 11,104,480,372.35
  5. Step 5: Solve for x
    x = 11,104,480,372.35/112,102.91
  6. Step 6: Final answer
    x = 99,056.13

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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.