Home / 155,802.25-215,002.55-87,823.21

Finding the Fourth Proportional to 155,802.25, 215,002.55 and 87,823.21

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Solution

The fourth proportional to 155,802.25, 215,002.55 and 87,823.21 is: 121,193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,802.25 : 215,002.55 = 87,823.21 : x
  2. Step 2: Convert to fraction form
    155,802.25/215,002.55 = 87,823.21/x
  3. Step 3: Cross multiply
    155,802.25x = 215,002.55 × 87,823.21
  4. Step 4: Simplify right side
    155,802.25x = 18,882,213,660.07
  5. Step 5: Solve for x
    x = 18,882,213,660.07/155,802.25
  6. Step 6: Final answer
    x = 121,193.46

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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.