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Finding the Fourth Proportional to 101,279.73, 139,722.13 and 60,970.15

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Solution

The fourth proportional to 101,279.73, 139,722.13 and 60,970.15 is: 84,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,279.73 : 139,722.13 = 60,970.15 : x
  2. Step 2: Convert to fraction form
    101,279.73/139,722.13 = 60,970.15/x
  3. Step 3: Cross multiply
    101,279.73x = 139,722.13 × 60,970.15
  4. Step 4: Simplify right side
    101,279.73x = 8,518,879,475.28
  5. Step 5: Solve for x
    x = 8,518,879,475.28/101,279.73
  6. Step 6: Final answer
    x = 84,112.38

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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.