Home / 112,530.67-155,219.16-72,180.52

Finding the Fourth Proportional to 112,530.67, 155,219.16 and 72,180.52

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Solution

The fourth proportional to 112,530.67, 155,219.16 and 72,180.52 is: 99,562.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,530.67 : 155,219.16 = 72,180.52 : x
  2. Step 2: Convert to fraction form
    112,530.67/155,219.16 = 72,180.52/x
  3. Step 3: Cross multiply
    112,530.67x = 155,219.16 × 72,180.52
  4. Step 4: Simplify right side
    112,530.67x = 11,203,799,682.76
  5. Step 5: Solve for x
    x = 11,203,799,682.76/112,530.67
  6. Step 6: Final answer
    x = 99,562.19

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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.