Home / 134,838.92-185,999.13-86,423.60

Finding the Fourth Proportional to 134,838.92, 185,999.13 and 86,423.60

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Solution

The fourth proportional to 134,838.92, 185,999.13 and 86,423.60 is: 119,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,838.92 : 185,999.13 = 86,423.60 : x
  2. Step 2: Convert to fraction form
    134,838.92/185,999.13 = 86,423.60/x
  3. Step 3: Cross multiply
    134,838.92x = 185,999.13 × 86,423.60
  4. Step 4: Simplify right side
    134,838.92x = 16,074,713,481.47
  5. Step 5: Solve for x
    x = 16,074,713,481.47/134,838.92
  6. Step 6: Final answer
    x = 119,214.20

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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.