Home / 186,720.40-280,080.60-68,403.70

Finding the Fourth Proportional to 186,720.40, 280,080.60 and 68,403.70

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Solution

The fourth proportional to 186,720.40, 280,080.60 and 68,403.70 is: 102,605.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,720.40 : 280,080.60 = 68,403.70 : x
  2. Step 2: Convert to fraction form
    186,720.40/280,080.60 = 68,403.70/x
  3. Step 3: Cross multiply
    186,720.40x = 280,080.60 × 68,403.70
  4. Step 4: Simplify right side
    186,720.40x = 19,158,549,338.22
  5. Step 5: Solve for x
    x = 19,158,549,338.22/186,720.40
  6. Step 6: Final answer
    x = 102,605.55

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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.