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Finding the Fourth Proportional to 162,221.40, 243,332.10 and 51,413.40

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Solution

The fourth proportional to 162,221.40, 243,332.10 and 51,413.40 is: 77,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,221.40 : 243,332.10 = 51,413.40 : x
  2. Step 2: Convert to fraction form
    162,221.40/243,332.10 = 51,413.40/x
  3. Step 3: Cross multiply
    162,221.40x = 243,332.10 × 51,413.40
  4. Step 4: Simplify right side
    162,221.40x = 12,510,530,590.14
  5. Step 5: Solve for x
    x = 12,510,530,590.14/162,221.40
  6. Step 6: Final answer
    x = 77,120.10

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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.