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Finding the Fourth Proportional to 162,638.40, 243,957.60 and 79,694.40

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Solution

The fourth proportional to 162,638.40, 243,957.60 and 79,694.40 is: 119,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,638.40 : 243,957.60 = 79,694.40 : x
  2. Step 2: Convert to fraction form
    162,638.40/243,957.60 = 79,694.40/x
  3. Step 3: Cross multiply
    162,638.40x = 243,957.60 × 79,694.40
  4. Step 4: Simplify right side
    162,638.40x = 19,442,054,557.44
  5. Step 5: Solve for x
    x = 19,442,054,557.44/162,638.40
  6. Step 6: Final answer
    x = 119,541.60

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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.