Home / 109,647.12-151,323-61,912.20

Finding the Fourth Proportional to 109,647.12, 151,323 and 61,912.20

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Solution

The fourth proportional to 109,647.12, 151,323 and 61,912.20 is: 85,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,647.12 : 151,323 = 61,912.20 : x
  2. Step 2: Convert to fraction form
    109,647.12/151,323 = 61,912.20/x
  3. Step 3: Cross multiply
    109,647.12x = 151,323 × 61,912.20
  4. Step 4: Simplify right side
    109,647.12x = 9,368,739,840.60
  5. Step 5: Solve for x
    x = 9,368,739,840.60/109,647.12
  6. Step 6: Final answer
    x = 85,444.47

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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.