Home / 205,914.23-309,071.08-99,373.17

Finding the Fourth Proportional to 205,914.23, 309,071.08 and 99,373.17

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Solution

The fourth proportional to 205,914.23, 309,071.08 and 99,373.17 is: 149,156.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,914.23 : 309,071.08 = 99,373.17 : x
  2. Step 2: Convert to fraction form
    205,914.23/309,071.08 = 99,373.17/x
  3. Step 3: Cross multiply
    205,914.23x = 309,071.08 × 99,373.17
  4. Step 4: Simplify right side
    205,914.23x = 30,713,371,091.40
  5. Step 5: Solve for x
    x = 30,713,371,091.40/205,914.23
  6. Step 6: Final answer
    x = 149,156.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.