Home / 155,045.39-213,964.88-87,077.07

Finding the Fourth Proportional to 155,045.39, 213,964.88 and 87,077.07

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Solution

The fourth proportional to 155,045.39, 213,964.88 and 87,077.07 is: 120,167.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,045.39 : 213,964.88 = 87,077.07 : x
  2. Step 2: Convert to fraction form
    155,045.39/213,964.88 = 87,077.07/x
  3. Step 3: Cross multiply
    155,045.39x = 213,964.88 × 87,077.07
  4. Step 4: Simplify right side
    155,045.39x = 18,631,434,397.92
  5. Step 5: Solve for x
    x = 18,631,434,397.92/155,045.39
  6. Step 6: Final answer
    x = 120,167.62

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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.