Home / 218,961.10-302,166.20-118,359.10

Finding the Fourth Proportional to 218,961.10, 302,166.20 and 118,359.10

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Solution

The fourth proportional to 218,961.10, 302,166.20 and 118,359.10 is: 163,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,961.10 : 302,166.20 = 118,359.10 : x
  2. Step 2: Convert to fraction form
    218,961.10/302,166.20 = 118,359.10/x
  3. Step 3: Cross multiply
    218,961.10x = 302,166.20 × 118,359.10
  4. Step 4: Simplify right side
    218,961.10x = 35,764,119,482.42
  5. Step 5: Solve for x
    x = 35,764,119,482.42/218,961.10
  6. Step 6: Final answer
    x = 163,335.49

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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.