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Finding the Fourth Proportional to 101,737.39, 140,396.89 and 56,415.40

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Solution

The fourth proportional to 101,737.39, 140,396.89 and 56,415.40 is: 77,852.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,737.39 : 140,396.89 = 56,415.40 : x
  2. Step 2: Convert to fraction form
    101,737.39/140,396.89 = 56,415.40/x
  3. Step 3: Cross multiply
    101,737.39x = 140,396.89 × 56,415.40
  4. Step 4: Simplify right side
    101,737.39x = 7,920,546,708.11
  5. Step 5: Solve for x
    x = 7,920,546,708.11/101,737.39
  6. Step 6: Final answer
    x = 77,852.86

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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.