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Finding the Fourth Proportional to 101,447.46, 139,972.32 and 65,594.34

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Solution

The fourth proportional to 101,447.46, 139,972.32 and 65,594.34 is: 90,503.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,447.46 : 139,972.32 = 65,594.34 : x
  2. Step 2: Convert to fraction form
    101,447.46/139,972.32 = 65,594.34/x
  3. Step 3: Cross multiply
    101,447.46x = 139,972.32 × 65,594.34
  4. Step 4: Simplify right side
    101,447.46x = 9,181,391,948.67
  5. Step 5: Solve for x
    x = 9,181,391,948.67/101,447.46
  6. Step 6: Final answer
    x = 90,503.91

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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.