Home / 109,421.80-150,999.78-64,126.60

Finding the Fourth Proportional to 109,421.80, 150,999.78 and 64,126.60

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Solution

The fourth proportional to 109,421.80, 150,999.78 and 64,126.60 is: 88,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,421.80 : 150,999.78 = 64,126.60 : x
  2. Step 2: Convert to fraction form
    109,421.80/150,999.78 = 64,126.60/x
  3. Step 3: Cross multiply
    109,421.80x = 150,999.78 × 64,126.60
  4. Step 4: Simplify right side
    109,421.80x = 9,683,102,492.15
  5. Step 5: Solve for x
    x = 9,683,102,492.15/109,421.80
  6. Step 6: Final answer
    x = 88,493.36

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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.