Home / 88,128.24-121,604.14-50,395.20

Finding the Fourth Proportional to 88,128.24, 121,604.14 and 50,395.20

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Solution

The fourth proportional to 88,128.24, 121,604.14 and 50,395.20 is: 69,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128.24 : 121,604.14 = 50,395.20 : x
  2. Step 2: Convert to fraction form
    88,128.24/121,604.14 = 50,395.20/x
  3. Step 3: Cross multiply
    88,128.24x = 121,604.14 × 50,395.20
  4. Step 4: Simplify right side
    88,128.24x = 6,128,264,279.63
  5. Step 5: Solve for x
    x = 6,128,264,279.63/88,128.24
  6. Step 6: Final answer
    x = 69,538.03

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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.