Home / 149,301.21-206,038.13-81,319.50

Finding the Fourth Proportional to 149,301.21, 206,038.13 and 81,319.50

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Solution

The fourth proportional to 149,301.21, 206,038.13 and 81,319.50 is: 112,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,301.21 : 206,038.13 = 81,319.50 : x
  2. Step 2: Convert to fraction form
    149,301.21/206,038.13 = 81,319.50/x
  3. Step 3: Cross multiply
    149,301.21x = 206,038.13 × 81,319.50
  4. Step 4: Simplify right side
    149,301.21x = 16,754,917,305.94
  5. Step 5: Solve for x
    x = 16,754,917,305.94/149,301.21
  6. Step 6: Final answer
    x = 112,222.25

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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.