Home / 143,712.06-198,307.50-83,301.66

Finding the Fourth Proportional to 143,712.06, 198,307.50 and 83,301.66

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Solution

The fourth proportional to 143,712.06, 198,307.50 and 83,301.66 is: 114,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,712.06 : 198,307.50 = 83,301.66 : x
  2. Step 2: Convert to fraction form
    143,712.06/198,307.50 = 83,301.66/x
  3. Step 3: Cross multiply
    143,712.06x = 198,307.50 × 83,301.66
  4. Step 4: Simplify right side
    143,712.06x = 16,519,343,940.45
  5. Step 5: Solve for x
    x = 16,519,343,940.45/143,712.06
  6. Step 6: Final answer
    x = 114,947.51

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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.