Home / 149,681.12-206,488.31-101,299.95

Finding the Fourth Proportional to 149,681.12, 206,488.31 and 101,299.95

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Solution

The fourth proportional to 149,681.12, 206,488.31 and 101,299.95 is: 139,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,681.12 : 206,488.31 = 101,299.95 : x
  2. Step 2: Convert to fraction form
    149,681.12/206,488.31 = 101,299.95/x
  3. Step 3: Cross multiply
    149,681.12x = 206,488.31 × 101,299.95
  4. Step 4: Simplify right side
    149,681.12x = 20,917,254,972.08
  5. Step 5: Solve for x
    x = 20,917,254,972.08/149,681.12
  6. Step 6: Final answer
    x = 139,745.45

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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.