Home / 161,886.40-243,121.20-156,637.60

Finding the Fourth Proportional to 161,886.40, 243,121.20 and 156,637.60

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Solution

The fourth proportional to 161,886.40, 243,121.20 and 156,637.60 is: 235,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,886.40 : 243,121.20 = 156,637.60 : x
  2. Step 2: Convert to fraction form
    161,886.40/243,121.20 = 156,637.60/x
  3. Step 3: Cross multiply
    161,886.40x = 243,121.20 × 156,637.60
  4. Step 4: Simplify right side
    161,886.40x = 38,081,921,277.12
  5. Step 5: Solve for x
    x = 38,081,921,277.12/161,886.40
  6. Step 6: Final answer
    x = 235,238.55

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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.