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Finding the Fourth Proportional to 143,590.99, 198,153.94 and 79,058.91

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Solution

The fourth proportional to 143,590.99, 198,153.94 and 79,058.91 is: 109,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,590.99 : 198,153.94 = 79,058.91 : x
  2. Step 2: Convert to fraction form
    143,590.99/198,153.94 = 79,058.91/x
  3. Step 3: Cross multiply
    143,590.99x = 198,153.94 × 79,058.91
  4. Step 4: Simplify right side
    143,590.99x = 15,665,835,145.29
  5. Step 5: Solve for x
    x = 15,665,835,145.29/143,590.99
  6. Step 6: Final answer
    x = 109,100.40

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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.