Home / 149,368.40-206,125.89-81,386.18

Finding the Fourth Proportional to 149,368.40, 206,125.89 and 81,386.18

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Solution

The fourth proportional to 149,368.40, 206,125.89 and 81,386.18 is: 112,311.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,368.40 : 206,125.89 = 81,386.18 : x
  2. Step 2: Convert to fraction form
    149,368.40/206,125.89 = 81,386.18/x
  3. Step 3: Cross multiply
    149,368.40x = 206,125.89 × 81,386.18
  4. Step 4: Simplify right side
    149,368.40x = 16,775,798,786.20
  5. Step 5: Solve for x
    x = 16,775,798,786.20/149,368.40
  6. Step 6: Final answer
    x = 112,311.57

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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.