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Finding the Fourth Proportional to 93,717.60, 140,608.80 and 90,477.60

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Solution

The fourth proportional to 93,717.60, 140,608.80 and 90,477.60 is: 135,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,717.60 : 140,608.80 = 90,477.60 : x
  2. Step 2: Convert to fraction form
    93,717.60/140,608.80 = 90,477.60/x
  3. Step 3: Cross multiply
    93,717.60x = 140,608.80 × 90,477.60
  4. Step 4: Simplify right side
    93,717.60x = 12,721,946,762.88
  5. Step 5: Solve for x
    x = 12,721,946,762.88/93,717.60
  6. Step 6: Final answer
    x = 135,747.68

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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.