Home / 149,740.12-206,638.32-86,077.36

Finding the Fourth Proportional to 149,740.12, 206,638.32 and 86,077.36

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Solution

The fourth proportional to 149,740.12, 206,638.32 and 86,077.36 is: 118,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,740.12 : 206,638.32 = 86,077.36 : x
  2. Step 2: Convert to fraction form
    149,740.12/206,638.32 = 86,077.36/x
  3. Step 3: Cross multiply
    149,740.12x = 206,638.32 × 86,077.36
  4. Step 4: Simplify right side
    149,740.12x = 17,786,881,060.44
  5. Step 5: Solve for x
    x = 17,786,881,060.44/149,740.12
  6. Step 6: Final answer
    x = 118,785.01

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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.