Home / 149,412.59-206,184.13-81,428.20

Finding the Fourth Proportional to 149,412.59, 206,184.13 and 81,428.20

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Solution

The fourth proportional to 149,412.59, 206,184.13 and 81,428.20 is: 112,368.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,412.59 : 206,184.13 = 81,428.20 : x
  2. Step 2: Convert to fraction form
    149,412.59/206,184.13 = 81,428.20/x
  3. Step 3: Cross multiply
    149,412.59x = 206,184.13 × 81,428.20
  4. Step 4: Simplify right side
    149,412.59x = 16,789,202,574.47
  5. Step 5: Solve for x
    x = 16,789,202,574.47/149,412.59
  6. Step 6: Final answer
    x = 112,368.06

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1.5x scale

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.