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Finding the Fourth Proportional to 105,319.98, 157,993.63 and 38,760.91

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Solution

The fourth proportional to 105,319.98, 157,993.63 and 38,760.91 is: 58,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,319.98 : 157,993.63 = 38,760.91 : x
  2. Step 2: Convert to fraction form
    105,319.98/157,993.63 = 38,760.91/x
  3. Step 3: Cross multiply
    105,319.98x = 157,993.63 × 38,760.91
  4. Step 4: Simplify right side
    105,319.98x = 6,123,976,381.12
  5. Step 5: Solve for x
    x = 6,123,976,381.12/105,319.98
  6. Step 6: Final answer
    x = 58,146.39

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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.