Home / 100,652.03-138,900.25-55,332.93

Finding the Fourth Proportional to 100,652.03, 138,900.25 and 55,332.93

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Solution

The fourth proportional to 100,652.03, 138,900.25 and 55,332.93 is: 76,359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,652.03 : 138,900.25 = 55,332.93 : x
  2. Step 2: Convert to fraction form
    100,652.03/138,900.25 = 55,332.93/x
  3. Step 3: Cross multiply
    100,652.03x = 138,900.25 × 55,332.93
  4. Step 4: Simplify right side
    100,652.03x = 7,685,757,810.23
  5. Step 5: Solve for x
    x = 7,685,757,810.23/100,652.03
  6. Step 6: Final answer
    x = 76,359.69

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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.