Home / 145,237.17-218,042.33-111,978.36

Finding the Fourth Proportional to 145,237.17, 218,042.33 and 111,978.36

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Solution

The fourth proportional to 145,237.17, 218,042.33 and 111,978.36 is: 168,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,237.17 : 218,042.33 = 111,978.36 : x
  2. Step 2: Convert to fraction form
    145,237.17/218,042.33 = 111,978.36/x
  3. Step 3: Cross multiply
    145,237.17x = 218,042.33 × 111,978.36
  4. Step 4: Simplify right side
    145,237.17x = 24,416,021,964.09
  5. Step 5: Solve for x
    x = 24,416,021,964.09/145,237.17
  6. Step 6: Final answer
    x = 168,111.39

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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.