Home / 149,742.12-206,641.08-86,079.36

Finding the Fourth Proportional to 149,742.12, 206,641.08 and 86,079.36

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Solution

The fourth proportional to 149,742.12, 206,641.08 and 86,079.36 is: 118,787.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,742.12 : 206,641.08 = 86,079.36 : x
  2. Step 2: Convert to fraction form
    149,742.12/206,641.08 = 86,079.36/x
  3. Step 3: Cross multiply
    149,742.12x = 206,641.08 × 86,079.36
  4. Step 4: Simplify right side
    149,742.12x = 17,787,531,916.11
  5. Step 5: Solve for x
    x = 17,787,531,916.11/149,742.12
  6. Step 6: Final answer
    x = 118,787.77

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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.