Home / 141,138.65-211,639.93-81,991.24

Finding the Fourth Proportional to 141,138.65, 211,639.93 and 81,991.24

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Solution

The fourth proportional to 141,138.65, 211,639.93 and 81,991.24 is: 122,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,138.65 : 211,639.93 = 81,991.24 : x
  2. Step 2: Convert to fraction form
    141,138.65/211,639.93 = 81,991.24/x
  3. Step 3: Cross multiply
    141,138.65x = 211,639.93 × 81,991.24
  4. Step 4: Simplify right side
    141,138.65x = 17,352,620,294.21
  5. Step 5: Solve for x
    x = 17,352,620,294.21/141,138.65
  6. Step 6: Final answer
    x = 122,947.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.