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Finding the Fourth Proportional to 101,929.59, 140,664.72 and 56,611.77

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Solution

The fourth proportional to 101,929.59, 140,664.72 and 56,611.77 is: 78,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,929.59 : 140,664.72 = 56,611.77 : x
  2. Step 2: Convert to fraction form
    101,929.59/140,664.72 = 56,611.77/x
  3. Step 3: Cross multiply
    101,929.59x = 140,664.72 × 56,611.77
  4. Step 4: Simplify right side
    101,929.59x = 7,963,278,775.75
  5. Step 5: Solve for x
    x = 7,963,278,775.75/101,929.59
  6. Step 6: Final answer
    x = 78,125.29

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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.