Home / 101,813.04-140,372.82-72,776.16

Finding the Fourth Proportional to 101,813.04, 140,372.82 and 72,776.16

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Solution

The fourth proportional to 101,813.04, 140,372.82 and 72,776.16 is: 100,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,813.04 : 140,372.82 = 72,776.16 : x
  2. Step 2: Convert to fraction form
    101,813.04/140,372.82 = 72,776.16/x
  3. Step 3: Cross multiply
    101,813.04x = 140,372.82 × 72,776.16
  4. Step 4: Simplify right side
    101,813.04x = 10,215,794,807.97
  5. Step 5: Solve for x
    x = 10,215,794,807.97/101,813.04
  6. Step 6: Final answer
    x = 100,338.77

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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.