Home / 109,729.02-151,425.24-61,991.70

Finding the Fourth Proportional to 109,729.02, 151,425.24 and 61,991.70

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Solution

The fourth proportional to 109,729.02, 151,425.24 and 61,991.70 is: 85,548.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,729.02 : 151,425.24 = 61,991.70 : x
  2. Step 2: Convert to fraction form
    109,729.02/151,425.24 = 61,991.70/x
  3. Step 3: Cross multiply
    109,729.02x = 151,425.24 × 61,991.70
  4. Step 4: Simplify right side
    109,729.02x = 9,387,108,050.51
  5. Step 5: Solve for x
    x = 9,387,108,050.51/109,729.02
  6. Step 6: Final answer
    x = 85,548.09

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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.