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Finding the Fourth Proportional to 126,008.25, 188,990.50 and 42,902.25

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Solution

The fourth proportional to 126,008.25, 188,990.50 and 42,902.25 is: 64,345.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,008.25 : 188,990.50 = 42,902.25 : x
  2. Step 2: Convert to fraction form
    126,008.25/188,990.50 = 42,902.25/x
  3. Step 3: Cross multiply
    126,008.25x = 188,990.50 × 42,902.25
  4. Step 4: Simplify right side
    126,008.25x = 8,108,117,678.63
  5. Step 5: Solve for x
    x = 8,108,117,678.63/126,008.25
  6. Step 6: Final answer
    x = 64,345.93

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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.