Home / 109,649.12-151,325.76-61,914.20

Finding the Fourth Proportional to 109,649.12, 151,325.76 and 61,914.20

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Solution

The fourth proportional to 109,649.12, 151,325.76 and 61,914.20 is: 85,447.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,649.12 : 151,325.76 = 61,914.20 : x
  2. Step 2: Convert to fraction form
    109,649.12/151,325.76 = 61,914.20/x
  3. Step 3: Cross multiply
    109,649.12x = 151,325.76 × 61,914.20
  4. Step 4: Simplify right side
    109,649.12x = 9,369,213,369.79
  5. Step 5: Solve for x
    x = 9,369,213,369.79/109,649.12
  6. Step 6: Final answer
    x = 85,447.23

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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.