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Finding the Fourth Proportional to 144,480.60, 199,461.96 and 87,130.17

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Solution

The fourth proportional to 144,480.60, 199,461.96 and 87,130.17 is: 120,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,480.60 : 199,461.96 = 87,130.17 : x
  2. Step 2: Convert to fraction form
    144,480.60/199,461.96 = 87,130.17/x
  3. Step 3: Cross multiply
    144,480.60x = 199,461.96 × 87,130.17
  4. Step 4: Simplify right side
    144,480.60x = 17,379,154,483.33
  5. Step 5: Solve for x
    x = 17,379,154,483.33/144,480.60
  6. Step 6: Final answer
    x = 120,287.11

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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.