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Finding the Fourth Proportional to 112,015.60, 168,019.80 and 37,139.20

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Solution

The fourth proportional to 112,015.60, 168,019.80 and 37,139.20 is: 55,707.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,015.60 : 168,019.80 = 37,139.20 : x
  2. Step 2: Convert to fraction form
    112,015.60/168,019.80 = 37,139.20/x
  3. Step 3: Cross multiply
    112,015.60x = 168,019.80 × 37,139.20
  4. Step 4: Simplify right side
    112,015.60x = 6,240,120,956.16
  5. Step 5: Solve for x
    x = 6,240,120,956.16/112,015.60
  6. Step 6: Final answer
    x = 55,707.61

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1.5x scale

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.