Home / 209,627.20-314,374.61-67,440.80

Finding the Fourth Proportional to 209,627.20, 314,374.61 and 67,440.80

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Solution

The fourth proportional to 209,627.20, 314,374.61 and 67,440.80 is: 101,139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,627.20 : 314,374.61 = 67,440.80 : x
  2. Step 2: Convert to fraction form
    209,627.20/314,374.61 = 67,440.80/x
  3. Step 3: Cross multiply
    209,627.20x = 314,374.61 × 67,440.80
  4. Step 4: Simplify right side
    209,627.20x = 21,201,676,152.63
  5. Step 5: Solve for x
    x = 21,201,676,152.63/209,627.20
  6. Step 6: Final answer
    x = 101,139.91

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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.