Home / 162,022.08-243,188.80-78,974.40

Finding the Fourth Proportional to 162,022.08, 243,188.80 and 78,974.40

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Solution

The fourth proportional to 162,022.08, 243,188.80 and 78,974.40 is: 118,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,022.08 : 243,188.80 = 78,974.40 : x
  2. Step 2: Convert to fraction form
    162,022.08/243,188.80 = 78,974.40/x
  3. Step 3: Cross multiply
    162,022.08x = 243,188.80 × 78,974.40
  4. Step 4: Simplify right side
    162,022.08x = 19,205,689,566.72
  5. Step 5: Solve for x
    x = 19,205,689,566.72/162,022.08
  6. Step 6: Final answer
    x = 118,537.48

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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.