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Finding the Fourth Proportional to 120,802.10, 181,203.15 and 70,906.10

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Solution

The fourth proportional to 120,802.10, 181,203.15 and 70,906.10 is: 106,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,802.10 : 181,203.15 = 70,906.10 : x
  2. Step 2: Convert to fraction form
    120,802.10/181,203.15 = 70,906.10/x
  3. Step 3: Cross multiply
    120,802.10x = 181,203.15 × 70,906.10
  4. Step 4: Simplify right side
    120,802.10x = 12,848,408,674.22
  5. Step 5: Solve for x
    x = 12,848,408,674.22/120,802.10
  6. Step 6: Final answer
    x = 106,359.15

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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.