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Finding the Fourth Proportional to 103,552.70, 142,868.35 and 84,399.57

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Solution

The fourth proportional to 103,552.70, 142,868.35 and 84,399.57 is: 116,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,552.70 : 142,868.35 = 84,399.57 : x
  2. Step 2: Convert to fraction form
    103,552.70/142,868.35 = 84,399.57/x
  3. Step 3: Cross multiply
    103,552.70x = 142,868.35 × 84,399.57
  4. Step 4: Simplify right side
    103,552.70x = 12,058,026,884.61
  5. Step 5: Solve for x
    x = 12,058,026,884.61/103,552.70
  6. Step 6: Final answer
    x = 116,443.39

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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.