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Finding the Fourth Proportional to 108,119.40, 162,154.80 and 70,940.40

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Solution

The fourth proportional to 108,119.40, 162,154.80 and 70,940.40 is: 106,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,119.40 : 162,154.80 = 70,940.40 : x
  2. Step 2: Convert to fraction form
    108,119.40/162,154.80 = 70,940.40/x
  3. Step 3: Cross multiply
    108,119.40x = 162,154.80 × 70,940.40
  4. Step 4: Simplify right side
    108,119.40x = 11,503,326,373.92
  5. Step 5: Solve for x
    x = 11,503,326,373.92/108,119.40
  6. Step 6: Final answer
    x = 106,394.66

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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.