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Finding the Fourth Proportional to 143,614.50, 198,058.98 and 89,904.40

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Solution

The fourth proportional to 143,614.50, 198,058.98 and 89,904.40 is: 123,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,614.50 : 198,058.98 = 89,904.40 : x
  2. Step 2: Convert to fraction form
    143,614.50/198,058.98 = 89,904.40/x
  3. Step 3: Cross multiply
    143,614.50x = 198,058.98 × 89,904.40
  4. Step 4: Simplify right side
    143,614.50x = 17,806,373,761.51
  5. Step 5: Solve for x
    x = 17,806,373,761.51/143,614.50
  6. Step 6: Final answer
    x = 123,987.30

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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.