Home / 144,030.60-198,855.86-128,897.25

Finding the Fourth Proportional to 144,030.60, 198,855.86 and 128,897.25

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Solution

The fourth proportional to 144,030.60, 198,855.86 and 128,897.25 is: 177,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,030.60 : 198,855.86 = 128,897.25 : x
  2. Step 2: Convert to fraction form
    144,030.60/198,855.86 = 128,897.25/x
  3. Step 3: Cross multiply
    144,030.60x = 198,855.86 × 128,897.25
  4. Step 4: Simplify right side
    144,030.60x = 25,631,972,855.90
  5. Step 5: Solve for x
    x = 25,631,972,855.90/144,030.60
  6. Step 6: Final answer
    x = 177,961.99

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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.