Home / 145,789.96-218,754.06-86,742.28

Finding the Fourth Proportional to 145,789.96, 218,754.06 and 86,742.28

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Solution

The fourth proportional to 145,789.96, 218,754.06 and 86,742.28 is: 130,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,789.96 : 218,754.06 = 86,742.28 : x
  2. Step 2: Convert to fraction form
    145,789.96/218,754.06 = 86,742.28/x
  3. Step 3: Cross multiply
    145,789.96x = 218,754.06 × 86,742.28
  4. Step 4: Simplify right side
    145,789.96x = 18,975,225,923.66
  5. Step 5: Solve for x
    x = 18,975,225,923.66/145,789.96
  6. Step 6: Final answer
    x = 130,154.55

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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.