Home / 155,943.58-215,193.91-87,958.62

Finding the Fourth Proportional to 155,943.58, 215,193.91 and 87,958.62

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Solution

The fourth proportional to 155,943.58, 215,193.91 and 87,958.62 is: 121,378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,943.58 : 215,193.91 = 87,958.62 : x
  2. Step 2: Convert to fraction form
    155,943.58/215,193.91 = 87,958.62/x
  3. Step 3: Cross multiply
    155,943.58x = 215,193.91 × 87,958.62
  4. Step 4: Simplify right side
    155,943.58x = 18,928,159,356.00
  5. Step 5: Solve for x
    x = 18,928,159,356.00/155,943.58
  6. Step 6: Final answer
    x = 121,378.25

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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.