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Finding the Fourth Proportional to 122,295.60, 168,802.92 and 72,023.76

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Solution

The fourth proportional to 122,295.60, 168,802.92 and 72,023.76 is: 99,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,295.60 : 168,802.92 = 72,023.76 : x
  2. Step 2: Convert to fraction form
    122,295.60/168,802.92 = 72,023.76/x
  3. Step 3: Cross multiply
    122,295.60x = 168,802.92 × 72,023.76
  4. Step 4: Simplify right side
    122,295.60x = 12,157,820,997.38
  5. Step 5: Solve for x
    x = 12,157,820,997.38/122,295.60
  6. Step 6: Final answer
    x = 99,413.40

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1.5x scale

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.