Home / 112,678.68-155,521.26-74,444.52

Finding the Fourth Proportional to 112,678.68, 155,521.26 and 74,444.52

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Solution

The fourth proportional to 112,678.68, 155,521.26 and 74,444.52 is: 102,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,678.68 : 155,521.26 = 74,444.52 : x
  2. Step 2: Convert to fraction form
    112,678.68/155,521.26 = 74,444.52/x
  3. Step 3: Cross multiply
    112,678.68x = 155,521.26 × 74,444.52
  4. Step 4: Simplify right side
    112,678.68x = 11,577,705,550.50
  5. Step 5: Solve for x
    x = 11,577,705,550.50/112,678.68
  6. Step 6: Final answer
    x = 102,749.74

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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.