Home / 112,343.66-154,770.54-78,290.24

Finding the Fourth Proportional to 112,343.66, 154,770.54 and 78,290.24

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Solution

The fourth proportional to 112,343.66, 154,770.54 and 78,290.24 is: 107,856.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,343.66 : 154,770.54 = 78,290.24 : x
  2. Step 2: Convert to fraction form
    112,343.66/154,770.54 = 78,290.24/x
  3. Step 3: Cross multiply
    112,343.66x = 154,770.54 × 78,290.24
  4. Step 4: Simplify right side
    112,343.66x = 12,117,022,721.53
  5. Step 5: Solve for x
    x = 12,117,022,721.53/112,343.66
  6. Step 6: Final answer
    x = 107,856.76

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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.