Home / 155,055.24-213,959.55-87,079.62

Finding the Fourth Proportional to 155,055.24, 213,959.55 and 87,079.62

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Solution

The fourth proportional to 155,055.24, 213,959.55 and 87,079.62 is: 120,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,055.24 : 213,959.55 = 87,079.62 : x
  2. Step 2: Convert to fraction form
    155,055.24/213,959.55 = 87,079.62/x
  3. Step 3: Cross multiply
    155,055.24x = 213,959.55 × 87,079.62
  4. Step 4: Simplify right side
    155,055.24x = 18,631,516,309.37
  5. Step 5: Solve for x
    x = 18,631,516,309.37/155,055.24
  6. Step 6: Final answer
    x = 120,160.51

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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.