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Finding the Fourth Proportional to 108,285.80, 162,428.70 and 61,629.80

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Solution

The fourth proportional to 108,285.80, 162,428.70 and 61,629.80 is: 92,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,285.80 : 162,428.70 = 61,629.80 : x
  2. Step 2: Convert to fraction form
    108,285.80/162,428.70 = 61,629.80/x
  3. Step 3: Cross multiply
    108,285.80x = 162,428.70 × 61,629.80
  4. Step 4: Simplify right side
    108,285.80x = 10,010,448,295.26
  5. Step 5: Solve for x
    x = 10,010,448,295.26/108,285.80
  6. Step 6: Final answer
    x = 92,444.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.