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Finding the Fourth Proportional to 162,065.80, 243,098.70 and 139,904.20

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Solution

The fourth proportional to 162,065.80, 243,098.70 and 139,904.20 is: 209,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,065.80 : 243,098.70 = 139,904.20 : x
  2. Step 2: Convert to fraction form
    162,065.80/243,098.70 = 139,904.20/x
  3. Step 3: Cross multiply
    162,065.80x = 243,098.70 × 139,904.20
  4. Step 4: Simplify right side
    162,065.80x = 34,010,529,144.54
  5. Step 5: Solve for x
    x = 34,010,529,144.54/162,065.80
  6. Step 6: Final answer
    x = 209,856.30

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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.