Home / 112,860.57-169,291.13-28,620.75

Finding the Fourth Proportional to 112,860.57, 169,291.13 and 28,620.75

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Solution

The fourth proportional to 112,860.57, 169,291.13 and 28,620.75 is: 42,931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,860.57 : 169,291.13 = 28,620.75 : x
  2. Step 2: Convert to fraction form
    112,860.57/169,291.13 = 28,620.75/x
  3. Step 3: Cross multiply
    112,860.57x = 169,291.13 × 28,620.75
  4. Step 4: Simplify right side
    112,860.57x = 4,845,238,965.84
  5. Step 5: Solve for x
    x = 4,845,238,965.84/112,860.57
  6. Step 6: Final answer
    x = 42,931.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.