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Finding the Fourth Proportional to 109,477.96, 151,066.74 and 61,728.46

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Solution

The fourth proportional to 109,477.96, 151,066.74 and 61,728.46 is: 85,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,477.96 : 151,066.74 = 61,728.46 : x
  2. Step 2: Convert to fraction form
    109,477.96/151,066.74 = 61,728.46/x
  3. Step 3: Cross multiply
    109,477.96x = 151,066.74 × 61,728.46
  4. Step 4: Simplify right side
    109,477.96x = 9,325,117,217.42
  5. Step 5: Solve for x
    x = 9,325,117,217.42/109,477.96
  6. Step 6: Final answer
    x = 85,178.03

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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.