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Finding the Fourth Proportional to 112,489.68, 155,266.56 and 70,023

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Solution

The fourth proportional to 112,489.68, 155,266.56 and 70,023 is: 96,650.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,489.68 : 155,266.56 = 70,023 : x
  2. Step 2: Convert to fraction form
    112,489.68/155,266.56 = 70,023/x
  3. Step 3: Cross multiply
    112,489.68x = 155,266.56 × 70,023
  4. Step 4: Simplify right side
    112,489.68x = 10,872,230,330.88
  5. Step 5: Solve for x
    x = 10,872,230,330.88/112,489.68
  6. Step 6: Final answer
    x = 96,650.91

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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.