Home / 109,416.78-151,009.38-61,685.10

Finding the Fourth Proportional to 109,416.78, 151,009.38 and 61,685.10

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Solution

The fourth proportional to 109,416.78, 151,009.38 and 61,685.10 is: 85,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,416.78 : 151,009.38 = 61,685.10 : x
  2. Step 2: Convert to fraction form
    109,416.78/151,009.38 = 61,685.10/x
  3. Step 3: Cross multiply
    109,416.78x = 151,009.38 × 61,685.10
  4. Step 4: Simplify right side
    109,416.78x = 9,315,028,706.24
  5. Step 5: Solve for x
    x = 9,315,028,706.24/109,416.78
  6. Step 6: Final answer
    x = 85,133.46

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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.