Home / 158,421.89-218,627.30-86,806.49

Finding the Fourth Proportional to 158,421.89, 218,627.30 and 86,806.49

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Solution

The fourth proportional to 158,421.89, 218,627.30 and 86,806.49 is: 119,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,421.89 : 218,627.30 = 86,806.49 : x
  2. Step 2: Convert to fraction form
    158,421.89/218,627.30 = 86,806.49/x
  3. Step 3: Cross multiply
    158,421.89x = 218,627.30 × 86,806.49
  4. Step 4: Simplify right side
    158,421.89x = 18,978,267,655.06
  5. Step 5: Solve for x
    x = 18,978,267,655.06/158,421.89
  6. Step 6: Final answer
    x = 119,795.74

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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.