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Finding the Fourth Proportional to 143,491.80, 197,988.66 and 83,058.84

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Solution

The fourth proportional to 143,491.80, 197,988.66 and 83,058.84 is: 114,603.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,491.80 : 197,988.66 = 83,058.84 : x
  2. Step 2: Convert to fraction form
    143,491.80/197,988.66 = 83,058.84/x
  3. Step 3: Cross multiply
    143,491.80x = 197,988.66 × 83,058.84
  4. Step 4: Simplify right side
    143,491.80x = 16,444,708,432.75
  5. Step 5: Solve for x
    x = 16,444,708,432.75/143,491.80
  6. Step 6: Final answer
    x = 114,603.82

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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.