Home / 138,445.65-191,055.06-74,783.43

Finding the Fourth Proportional to 138,445.65, 191,055.06 and 74,783.43

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Solution

The fourth proportional to 138,445.65, 191,055.06 and 74,783.43 is: 103,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,445.65 : 191,055.06 = 74,783.43 : x
  2. Step 2: Convert to fraction form
    138,445.65/191,055.06 = 74,783.43/x
  3. Step 3: Cross multiply
    138,445.65x = 191,055.06 × 74,783.43
  4. Step 4: Simplify right side
    138,445.65x = 14,287,752,705.66
  5. Step 5: Solve for x
    x = 14,287,752,705.66/138,445.65
  6. Step 6: Final answer
    x = 103,201.17

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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.