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Finding the Fourth Proportional to 101,602.72, 140,216.79 and 61,315.84

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Solution

The fourth proportional to 101,602.72, 140,216.79 and 61,315.84 is: 84,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,602.72 : 140,216.79 = 61,315.84 : x
  2. Step 2: Convert to fraction form
    101,602.72/140,216.79 = 61,315.84/x
  3. Step 3: Cross multiply
    101,602.72x = 140,216.79 × 61,315.84
  4. Step 4: Simplify right side
    101,602.72x = 8,597,510,260.95
  5. Step 5: Solve for x
    x = 8,597,510,260.95/101,602.72
  6. Step 6: Final answer
    x = 84,618.90

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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.