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Finding the Fourth Proportional to 101,817.36, 140,503.10 and 56,494.85

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Solution

The fourth proportional to 101,817.36, 140,503.10 and 56,494.85 is: 77,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,817.36 : 140,503.10 = 56,494.85 : x
  2. Step 2: Convert to fraction form
    101,817.36/140,503.10 = 56,494.85/x
  3. Step 3: Cross multiply
    101,817.36x = 140,503.10 × 56,494.85
  4. Step 4: Simplify right side
    101,817.36x = 7,937,700,574.05
  5. Step 5: Solve for x
    x = 7,937,700,574.05/101,817.36
  6. Step 6: Final answer
    x = 77,960.19

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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.