Home / 112,344.91-154,772.26-78,291.49

Finding the Fourth Proportional to 112,344.91, 154,772.26 and 78,291.49

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Solution

The fourth proportional to 112,344.91, 154,772.26 and 78,291.49 is: 107,858.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,344.91 : 154,772.26 = 78,291.49 : x
  2. Step 2: Convert to fraction form
    112,344.91/154,772.26 = 78,291.49/x
  3. Step 3: Cross multiply
    112,344.91x = 154,772.26 × 78,291.49
  4. Step 4: Simplify right side
    112,344.91x = 12,117,350,846.07
  5. Step 5: Solve for x
    x = 12,117,350,846.07/112,344.91
  6. Step 6: Final answer
    x = 107,858.48

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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.