Home / 145,744.69-218,123.25-89,620.34

Finding the Fourth Proportional to 145,744.69, 218,123.25 and 89,620.34

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Solution

The fourth proportional to 145,744.69, 218,123.25 and 89,620.34 is: 134,126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,744.69 : 218,123.25 = 89,620.34 : x
  2. Step 2: Convert to fraction form
    145,744.69/218,123.25 = 89,620.34/x
  3. Step 3: Cross multiply
    145,744.69x = 218,123.25 × 89,620.34
  4. Step 4: Simplify right side
    145,744.69x = 19,548,279,924.11
  5. Step 5: Solve for x
    x = 19,548,279,924.11/145,744.69
  6. Step 6: Final answer
    x = 134,126.88

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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.