Home / 153,694.11-212,097.45-85,711.16

Finding the Fourth Proportional to 153,694.11, 212,097.45 and 85,711.16

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Solution

The fourth proportional to 153,694.11, 212,097.45 and 85,711.16 is: 118,281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,694.11 : 212,097.45 = 85,711.16 : x
  2. Step 2: Convert to fraction form
    153,694.11/212,097.45 = 85,711.16/x
  3. Step 3: Cross multiply
    153,694.11x = 212,097.45 × 85,711.16
  4. Step 4: Simplify right side
    153,694.11x = 18,179,118,472.54
  5. Step 5: Solve for x
    x = 18,179,118,472.54/153,694.11
  6. Step 6: Final answer
    x = 118,281.17

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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.