Home / 112,372.20-155,074.16-61,385.64

Finding the Fourth Proportional to 112,372.20, 155,074.16 and 61,385.64

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Solution

The fourth proportional to 112,372.20, 155,074.16 and 61,385.64 is: 84,712.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,372.20 : 155,074.16 = 61,385.64 : x
  2. Step 2: Convert to fraction form
    112,372.20/155,074.16 = 61,385.64/x
  3. Step 3: Cross multiply
    112,372.20x = 155,074.16 × 61,385.64
  4. Step 4: Simplify right side
    112,372.20x = 9,519,326,559.06
  5. Step 5: Solve for x
    x = 9,519,326,559.06/112,372.20
  6. Step 6: Final answer
    x = 84,712.47

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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.