Home / 112,989.20-169,678.20-73,720.40

Finding the Fourth Proportional to 112,989.20, 169,678.20 and 73,720.40

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Solution

The fourth proportional to 112,989.20, 169,678.20 and 73,720.40 is: 110,707.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,989.20 : 169,678.20 = 73,720.40 : x
  2. Step 2: Convert to fraction form
    112,989.20/169,678.20 = 73,720.40/x
  3. Step 3: Cross multiply
    112,989.20x = 169,678.20 × 73,720.40
  4. Step 4: Simplify right side
    112,989.20x = 12,508,744,775.28
  5. Step 5: Solve for x
    x = 12,508,744,775.28/112,989.20
  6. Step 6: Final answer
    x = 110,707.44

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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.