Home / 103,987.20-143,477.28-61,556.16

Finding the Fourth Proportional to 103,987.20, 143,477.28 and 61,556.16

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Solution

The fourth proportional to 103,987.20, 143,477.28 and 61,556.16 is: 84,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,987.20 : 143,477.28 = 61,556.16 : x
  2. Step 2: Convert to fraction form
    103,987.20/143,477.28 = 61,556.16/x
  3. Step 3: Cross multiply
    103,987.20x = 143,477.28 × 61,556.16
  4. Step 4: Simplify right side
    103,987.20x = 8,831,910,404.04
  5. Step 5: Solve for x
    x = 8,831,910,404.04/103,987.20
  6. Step 6: Final answer
    x = 84,932.67

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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.