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Finding the Fourth Proportional to 122,338.32, 168,862.68 and 79,903.32

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Solution

The fourth proportional to 122,338.32, 168,862.68 and 79,903.32 is: 110,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,338.32 : 168,862.68 = 79,903.32 : x
  2. Step 2: Convert to fraction form
    122,338.32/168,862.68 = 79,903.32/x
  3. Step 3: Cross multiply
    122,338.32x = 168,862.68 × 79,903.32
  4. Step 4: Simplify right side
    122,338.32x = 13,492,688,756.10
  5. Step 5: Solve for x
    x = 13,492,688,756.10/122,338.32
  6. Step 6: Final answer
    x = 110,289.96

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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.