Home / 93,435.20-140,152.80-86,218.10

Finding the Fourth Proportional to 93,435.20, 140,152.80 and 86,218.10

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Solution

The fourth proportional to 93,435.20, 140,152.80 and 86,218.10 is: 129,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,435.20 : 140,152.80 = 86,218.10 : x
  2. Step 2: Convert to fraction form
    93,435.20/140,152.80 = 86,218.10/x
  3. Step 3: Cross multiply
    93,435.20x = 140,152.80 × 86,218.10
  4. Step 4: Simplify right side
    93,435.20x = 12,083,708,125.68
  5. Step 5: Solve for x
    x = 12,083,708,125.68/93,435.20
  6. Step 6: Final answer
    x = 129,327.15

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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.