Home / 138,444.19-191,053.05-74,781.98

Finding the Fourth Proportional to 138,444.19, 191,053.05 and 74,781.98

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Solution

The fourth proportional to 138,444.19, 191,053.05 and 74,781.98 is: 103,199.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,444.19 : 191,053.05 = 74,781.98 : x
  2. Step 2: Convert to fraction form
    138,444.19/191,053.05 = 74,781.98/x
  3. Step 3: Cross multiply
    138,444.19x = 191,053.05 × 74,781.98
  4. Step 4: Simplify right side
    138,444.19x = 14,287,326,550.44
  5. Step 5: Solve for x
    x = 14,287,326,550.44/138,444.19
  6. Step 6: Final answer
    x = 103,199.18

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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.