Home / 144,100.75-198,870.40-83,690.34

Finding the Fourth Proportional to 144,100.75, 198,870.40 and 83,690.34

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Solution

The fourth proportional to 144,100.75, 198,870.40 and 83,690.34 is: 115,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,100.75 : 198,870.40 = 83,690.34 : x
  2. Step 2: Convert to fraction form
    144,100.75/198,870.40 = 83,690.34/x
  3. Step 3: Cross multiply
    144,100.75x = 198,870.40 × 83,690.34
  4. Step 4: Simplify right side
    144,100.75x = 16,643,531,427.80
  5. Step 5: Solve for x
    x = 16,643,531,427.80/144,100.75
  6. Step 6: Final answer
    x = 115,499.27

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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.