Home / 99,254.21-136,987.13-72,485.33

Finding the Fourth Proportional to 99,254.21, 136,987.13 and 72,485.33

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Solution

The fourth proportional to 99,254.21, 136,987.13 and 72,485.33 is: 100,041.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,254.21 : 136,987.13 = 72,485.33 : x
  2. Step 2: Convert to fraction form
    99,254.21/136,987.13 = 72,485.33/x
  3. Step 3: Cross multiply
    99,254.21x = 136,987.13 × 72,485.33
  4. Step 4: Simplify right side
    99,254.21x = 9,929,556,820.08
  5. Step 5: Solve for x
    x = 9,929,556,820.08/99,254.21
  6. Step 6: Final answer
    x = 100,041.67

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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.