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Finding the Fourth Proportional to 101,970.86, 140,657.44 and 60,549.78

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Solution

The fourth proportional to 101,970.86, 140,657.44 and 60,549.78 is: 83,521.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,970.86 : 140,657.44 = 60,549.78 : x
  2. Step 2: Convert to fraction form
    101,970.86/140,657.44 = 60,549.78/x
  3. Step 3: Cross multiply
    101,970.86x = 140,657.44 × 60,549.78
  4. Step 4: Simplify right side
    101,970.86x = 8,516,777,423.45
  5. Step 5: Solve for x
    x = 8,516,777,423.45/101,970.86
  6. Step 6: Final answer
    x = 83,521.68

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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.