Home / 134,430.06-185,511.15-74,001.90

Finding the Fourth Proportional to 134,430.06, 185,511.15 and 74,001.90

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Solution

The fourth proportional to 134,430.06, 185,511.15 and 74,001.90 is: 102,121.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,430.06 : 185,511.15 = 74,001.90 : x
  2. Step 2: Convert to fraction form
    134,430.06/185,511.15 = 74,001.90/x
  3. Step 3: Cross multiply
    134,430.06x = 185,511.15 × 74,001.90
  4. Step 4: Simplify right side
    134,430.06x = 13,728,177,571.19
  5. Step 5: Solve for x
    x = 13,728,177,571.19/134,430.06
  6. Step 6: Final answer
    x = 102,121.34

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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.