Home / 121,632.54-182,120.61-79,408.02

Finding the Fourth Proportional to 121,632.54, 182,120.61 and 79,408.02

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Solution

The fourth proportional to 121,632.54, 182,120.61 and 79,408.02 is: 118,897.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,632.54 : 182,120.61 = 79,408.02 : x
  2. Step 2: Convert to fraction form
    121,632.54/182,120.61 = 79,408.02/x
  3. Step 3: Cross multiply
    121,632.54x = 182,120.61 × 79,408.02
  4. Step 4: Simplify right side
    121,632.54x = 14,461,837,041.29
  5. Step 5: Solve for x
    x = 14,461,837,041.29/121,632.54
  6. Step 6: Final answer
    x = 118,897.76

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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.