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Finding the Fourth Proportional to 99,331.19, 137,077.04 and 54,619.19

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Solution

The fourth proportional to 99,331.19, 137,077.04 and 54,619.19 is: 75,374.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,331.19 : 137,077.04 = 54,619.19 : x
  2. Step 2: Convert to fraction form
    99,331.19/137,077.04 = 54,619.19/x
  3. Step 3: Cross multiply
    99,331.19x = 137,077.04 × 54,619.19
  4. Step 4: Simplify right side
    99,331.19x = 7,487,036,549.71
  5. Step 5: Solve for x
    x = 7,487,036,549.71/99,331.19
  6. Step 6: Final answer
    x = 75,374.48

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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.