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Finding the Fourth Proportional to 130,569, 180,192.51 and 73,998.60

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Solution

The fourth proportional to 130,569, 180,192.51 and 73,998.60 is: 102,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,569 : 180,192.51 = 73,998.60 : x
  2. Step 2: Convert to fraction form
    130,569/180,192.51 = 73,998.60/x
  3. Step 3: Cross multiply
    130,569x = 180,192.51 × 73,998.60
  4. Step 4: Simplify right side
    130,569x = 13,333,993,470.49
  5. Step 5: Solve for x
    x = 13,333,993,470.49/130,569
  6. Step 6: Final answer
    x = 102,122.20

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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.