Home / 120,631.08-180,762.10-64,479.18

Finding the Fourth Proportional to 120,631.08, 180,762.10 and 64,479.18

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Solution

The fourth proportional to 120,631.08, 180,762.10 and 64,479.18 is: 96,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.08 : 180,762.10 = 64,479.18 : x
  2. Step 2: Convert to fraction form
    120,631.08/180,762.10 = 64,479.18/x
  3. Step 3: Cross multiply
    120,631.08x = 180,762.10 × 64,479.18
  4. Step 4: Simplify right side
    120,631.08x = 11,655,391,821.88
  5. Step 5: Solve for x
    x = 11,655,391,821.88/120,631.08
  6. Step 6: Final answer
    x = 96,620.14

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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.