Home / 103,556.36-155,101.18-72,530.12

Finding the Fourth Proportional to 103,556.36, 155,101.18 and 72,530.12

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Solution

The fourth proportional to 103,556.36, 155,101.18 and 72,530.12 is: 108,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,556.36 : 155,101.18 = 72,530.12 : x
  2. Step 2: Convert to fraction form
    103,556.36/155,101.18 = 72,530.12/x
  3. Step 3: Cross multiply
    103,556.36x = 155,101.18 × 72,530.12
  4. Step 4: Simplify right side
    103,556.36x = 11,249,507,197.54
  5. Step 5: Solve for x
    x = 11,249,507,197.54/103,556.36
  6. Step 6: Final answer
    x = 108,631.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.