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Finding the Fourth Proportional to 108,898.68, 150,279.60 and 61,156.20

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Solution

The fourth proportional to 108,898.68, 150,279.60 and 61,156.20 is: 84,395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,898.68 : 150,279.60 = 61,156.20 : x
  2. Step 2: Convert to fraction form
    108,898.68/150,279.60 = 61,156.20/x
  3. Step 3: Cross multiply
    108,898.68x = 150,279.60 × 61,156.20
  4. Step 4: Simplify right side
    108,898.68x = 9,190,529,273.52
  5. Step 5: Solve for x
    x = 9,190,529,273.52/108,898.68
  6. Step 6: Final answer
    x = 84,395.23

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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.