Home / 143,689.02-198,290.84-80,026.80

Finding the Fourth Proportional to 143,689.02, 198,290.84 and 80,026.80

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Solution

The fourth proportional to 143,689.02, 198,290.84 and 80,026.80 is: 110,436.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,689.02 : 198,290.84 = 80,026.80 : x
  2. Step 2: Convert to fraction form
    143,689.02/198,290.84 = 80,026.80/x
  3. Step 3: Cross multiply
    143,689.02x = 198,290.84 × 80,026.80
  4. Step 4: Simplify right side
    143,689.02x = 15,868,580,994.38
  5. Step 5: Solve for x
    x = 15,868,580,994.38/143,689.02
  6. Step 6: Final answer
    x = 110,436.98

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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.