Home / 109,505.03-151,103.21-64,172.64

Finding the Fourth Proportional to 109,505.03, 151,103.21 and 64,172.64

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Solution

The fourth proportional to 109,505.03, 151,103.21 and 64,172.64 is: 88,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,505.03 : 151,103.21 = 64,172.64 : x
  2. Step 2: Convert to fraction form
    109,505.03/151,103.21 = 64,172.64/x
  3. Step 3: Cross multiply
    109,505.03x = 151,103.21 × 64,172.64
  4. Step 4: Simplify right side
    109,505.03x = 9,696,692,058.61
  5. Step 5: Solve for x
    x = 9,696,692,058.61/109,505.03
  6. Step 6: Final answer
    x = 88,550.20

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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.