Home / 112,345,409.40-168,518,114.10-79,928,820.60

Finding the Fourth Proportional to 112,345,409.40, 168,518,114.10 and 79,928,820.60

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Solution

The fourth proportional to 112,345,409.40, 168,518,114.10 and 79,928,820.60 is: 119,893,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,345,409.40 : 168,518,114.10 = 79,928,820.60 : x
  2. Step 2: Convert to fraction form
    112,345,409.40/168,518,114.10 = 79,928,820.60/x
  3. Step 3: Cross multiply
    112,345,409.40x = 168,518,114.10 × 79,928,820.60
  4. Step 4: Simplify right side
    112,345,409.40x = 13,469,454,109,749,228
  5. Step 5: Solve for x
    x = 13,469,454,109,749,228/112,345,409.40
  6. Step 6: Final answer
    x = 119,893,230.90

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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.