Home / 161,815.20-242,722.80-108,938.40

Finding the Fourth Proportional to 161,815.20, 242,722.80 and 108,938.40

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Solution

The fourth proportional to 161,815.20, 242,722.80 and 108,938.40 is: 163,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,815.20 : 242,722.80 = 108,938.40 : x
  2. Step 2: Convert to fraction form
    161,815.20/242,722.80 = 108,938.40/x
  3. Step 3: Cross multiply
    161,815.20x = 242,722.80 × 108,938.40
  4. Step 4: Simplify right side
    161,815.20x = 26,441,833,475.52
  5. Step 5: Solve for x
    x = 26,441,833,475.52/161,815.20
  6. Step 6: Final answer
    x = 163,407.60

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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.