Home / 135,168.06-186,444.05-86,693.21

Finding the Fourth Proportional to 135,168.06, 186,444.05 and 86,693.21

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Solution

The fourth proportional to 135,168.06, 186,444.05 and 86,693.21 is: 119,580.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,168.06 : 186,444.05 = 86,693.21 : x
  2. Step 2: Convert to fraction form
    135,168.06/186,444.05 = 86,693.21/x
  3. Step 3: Cross multiply
    135,168.06x = 186,444.05 × 86,693.21
  4. Step 4: Simplify right side
    135,168.06x = 16,163,433,179.90
  5. Step 5: Solve for x
    x = 16,163,433,179.90/135,168.06
  6. Step 6: Final answer
    x = 119,580.27

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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.