Home / 103,470.13-155,203.63-28,588.60

Finding the Fourth Proportional to 103,470.13, 155,203.63 and 28,588.60

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Solution

The fourth proportional to 103,470.13, 155,203.63 and 28,588.60 is: 42,882.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,470.13 : 155,203.63 = 28,588.60 : x
  2. Step 2: Convert to fraction form
    103,470.13/155,203.63 = 28,588.60/x
  3. Step 3: Cross multiply
    103,470.13x = 155,203.63 × 28,588.60
  4. Step 4: Simplify right side
    103,470.13x = 4,437,054,496.62
  5. Step 5: Solve for x
    x = 4,437,054,496.62/103,470.13
  6. Step 6: Final answer
    x = 42,882.47

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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.