Home / 103,864.80-143,371.44-69,417.12

Finding the Fourth Proportional to 103,864.80, 143,371.44 and 69,417.12

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Solution

The fourth proportional to 103,864.80, 143,371.44 and 69,417.12 is: 95,821.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,864.80 : 143,371.44 = 69,417.12 : x
  2. Step 2: Convert to fraction form
    103,864.80/143,371.44 = 69,417.12/x
  3. Step 3: Cross multiply
    103,864.80x = 143,371.44 × 69,417.12
  4. Step 4: Simplify right side
    103,864.80x = 9,952,432,455.05
  5. Step 5: Solve for x
    x = 9,952,432,455.05/103,864.80
  6. Step 6: Final answer
    x = 95,821.03

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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.