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Finding the Fourth Proportional to 173,765.70, 239,725.40 and 105,728.13

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Solution

The fourth proportional to 173,765.70, 239,725.40 and 105,728.13 is: 145,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,765.70 : 239,725.40 = 105,728.13 : x
  2. Step 2: Convert to fraction form
    173,765.70/239,725.40 = 105,728.13/x
  3. Step 3: Cross multiply
    173,765.70x = 239,725.40 × 105,728.13
  4. Step 4: Simplify right side
    173,765.70x = 25,345,717,726.86
  5. Step 5: Solve for x
    x = 25,345,717,726.86/173,765.70
  6. Step 6: Final answer
    x = 145,861.45

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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.