Home / 118,291.30-163,420.05-77,552.22

Finding the Fourth Proportional to 118,291.30, 163,420.05 and 77,552.22

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Solution

The fourth proportional to 118,291.30, 163,420.05 and 77,552.22 is: 107,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,291.30 : 163,420.05 = 77,552.22 : x
  2. Step 2: Convert to fraction form
    118,291.30/163,420.05 = 77,552.22/x
  3. Step 3: Cross multiply
    118,291.30x = 163,420.05 × 77,552.22
  4. Step 4: Simplify right side
    118,291.30x = 12,673,587,670.01
  5. Step 5: Solve for x
    x = 12,673,587,670.01/118,291.30
  6. Step 6: Final answer
    x = 107,138.80

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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.