Home / 143,943.90-198,578.34-83,479.50

Finding the Fourth Proportional to 143,943.90, 198,578.34 and 83,479.50

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Solution

The fourth proportional to 143,943.90, 198,578.34 and 83,479.50 is: 115,164.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,943.90 : 198,578.34 = 83,479.50 : x
  2. Step 2: Convert to fraction form
    143,943.90/198,578.34 = 83,479.50/x
  3. Step 3: Cross multiply
    143,943.90x = 198,578.34 × 83,479.50
  4. Step 4: Simplify right side
    143,943.90x = 16,577,220,534.03
  5. Step 5: Solve for x
    x = 16,577,220,534.03/143,943.90
  6. Step 6: Final answer
    x = 115,164.45

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1.5x scale

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.