Home / 145,342.51-218,013.87-40,161.58

Finding the Fourth Proportional to 145,342.51, 218,013.87 and 40,161.58

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Solution

The fourth proportional to 145,342.51, 218,013.87 and 40,161.58 is: 60,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,342.51 : 218,013.87 = 40,161.58 : x
  2. Step 2: Convert to fraction form
    145,342.51/218,013.87 = 40,161.58/x
  3. Step 3: Cross multiply
    145,342.51x = 218,013.87 × 40,161.58
  4. Step 4: Simplify right side
    145,342.51x = 8,755,781,481.11
  5. Step 5: Solve for x
    x = 8,755,781,481.11/145,342.51
  6. Step 6: Final answer
    x = 60,242.40

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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.