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Finding the Fourth Proportional to 101,893.15, 140,614.20 and 56,574.05

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Solution

The fourth proportional to 101,893.15, 140,614.20 and 56,574.05 is: 78,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,893.15 : 140,614.20 = 56,574.05 : x
  2. Step 2: Convert to fraction form
    101,893.15/140,614.20 = 56,574.05/x
  3. Step 3: Cross multiply
    101,893.15x = 140,614.20 × 56,574.05
  4. Step 4: Simplify right side
    101,893.15x = 7,955,115,133.05
  5. Step 5: Solve for x
    x = 7,955,115,133.05/101,893.15
  6. Step 6: Final answer
    x = 78,073.11

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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.