Home / 205,432.40-308,148.60-112,120.40

Finding the Fourth Proportional to 205,432.40, 308,148.60 and 112,120.40

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Solution

The fourth proportional to 205,432.40, 308,148.60 and 112,120.40 is: 168,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,432.40 : 308,148.60 = 112,120.40 : x
  2. Step 2: Convert to fraction form
    205,432.40/308,148.60 = 112,120.40/x
  3. Step 3: Cross multiply
    205,432.40x = 308,148.60 × 112,120.40
  4. Step 4: Simplify right side
    205,432.40x = 34,549,744,291.44
  5. Step 5: Solve for x
    x = 34,549,744,291.44/205,432.40
  6. Step 6: Final answer
    x = 168,180.60

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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.