Home / 180,439.20-249,105.60-135,101.16

Finding the Fourth Proportional to 180,439.20, 249,105.60 and 135,101.16

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Solution

The fourth proportional to 180,439.20, 249,105.60 and 135,101.16 is: 186,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,439.20 : 249,105.60 = 135,101.16 : x
  2. Step 2: Convert to fraction form
    180,439.20/249,105.60 = 135,101.16/x
  3. Step 3: Cross multiply
    180,439.20x = 249,105.60 × 135,101.16
  4. Step 4: Simplify right side
    180,439.20x = 33,654,455,522.50
  5. Step 5: Solve for x
    x = 33,654,455,522.50/180,439.20
  6. Step 6: Final answer
    x = 186,514.10

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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.