Home / 112,512.10-155,193.54-72,161.95

Finding the Fourth Proportional to 112,512.10, 155,193.54 and 72,161.95

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Solution

The fourth proportional to 112,512.10, 155,193.54 and 72,161.95 is: 99,536.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,512.10 : 155,193.54 = 72,161.95 : x
  2. Step 2: Convert to fraction form
    112,512.10/155,193.54 = 72,161.95/x
  3. Step 3: Cross multiply
    112,512.10x = 155,193.54 × 72,161.95
  4. Step 4: Simplify right side
    112,512.10x = 11,199,068,667.79
  5. Step 5: Solve for x
    x = 11,199,068,667.79/112,512.10
  6. Step 6: Final answer
    x = 99,536.57

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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.