Home / 149,369.71-206,127.59-81,387.25

Finding the Fourth Proportional to 149,369.71, 206,127.59 and 81,387.25

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Solution

The fourth proportional to 149,369.71, 206,127.59 and 81,387.25 is: 112,312.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,369.71 : 206,127.59 = 81,387.25 : x
  2. Step 2: Convert to fraction form
    149,369.71/206,127.59 = 81,387.25/x
  3. Step 3: Cross multiply
    149,369.71x = 206,127.59 × 81,387.25
  4. Step 4: Simplify right side
    149,369.71x = 16,776,156,465.12
  5. Step 5: Solve for x
    x = 16,776,156,465.12/149,369.71
  6. Step 6: Final answer
    x = 112,312.98

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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.