Home / 149,686.72-206,603.08-86,061.52

Finding the Fourth Proportional to 149,686.72, 206,603.08 and 86,061.52

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Solution

The fourth proportional to 149,686.72, 206,603.08 and 86,061.52 is: 118,785.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,686.72 : 206,603.08 = 86,061.52 : x
  2. Step 2: Convert to fraction form
    149,686.72/206,603.08 = 86,061.52/x
  3. Step 3: Cross multiply
    149,686.72x = 206,603.08 × 86,061.52
  4. Step 4: Simplify right side
    149,686.72x = 17,780,575,101.48
  5. Step 5: Solve for x
    x = 17,780,575,101.48/149,686.72
  6. Step 6: Final answer
    x = 118,785.25

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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.