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Finding the Fourth Proportional to 161,703.40, 242,555.10 and 120,231.40

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Solution

The fourth proportional to 161,703.40, 242,555.10 and 120,231.40 is: 180,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,703.40 : 242,555.10 = 120,231.40 : x
  2. Step 2: Convert to fraction form
    161,703.40/242,555.10 = 120,231.40/x
  3. Step 3: Cross multiply
    161,703.40x = 242,555.10 × 120,231.40
  4. Step 4: Simplify right side
    161,703.40x = 29,162,739,250.14
  5. Step 5: Solve for x
    x = 29,162,739,250.14/161,703.40
  6. Step 6: Final answer
    x = 180,347.10

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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.