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Finding the Fourth Proportional to 120,762.80, 181,259.40 and 103,252.40

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Solution

The fourth proportional to 120,762.80, 181,259.40 and 103,252.40 is: 154,977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,762.80 : 181,259.40 = 103,252.40 : x
  2. Step 2: Convert to fraction form
    120,762.80/181,259.40 = 103,252.40/x
  3. Step 3: Cross multiply
    120,762.80x = 181,259.40 × 103,252.40
  4. Step 4: Simplify right side
    120,762.80x = 18,715,468,072.56
  5. Step 5: Solve for x
    x = 18,715,468,072.56/120,762.80
  6. Step 6: Final answer
    x = 154,977.10

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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.