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Finding the Fourth Proportional to 140,557.80, 210,933.90 and 101,143.20

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Solution

The fourth proportional to 140,557.80, 210,933.90 and 101,143.20 is: 151,784.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,557.80 : 210,933.90 = 101,143.20 : x
  2. Step 2: Convert to fraction form
    140,557.80/210,933.90 = 101,143.20/x
  3. Step 3: Cross multiply
    140,557.80x = 210,933.90 × 101,143.20
  4. Step 4: Simplify right side
    140,557.80x = 21,334,529,634.48
  5. Step 5: Solve for x
    x = 21,334,529,634.48/140,557.80
  6. Step 6: Final answer
    x = 151,784.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.