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Finding the Fourth Proportional to 93,243.60, 139,700.70 and 90,160.20

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Solution

The fourth proportional to 93,243.60, 139,700.70 and 90,160.20 is: 135,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,243.60 : 139,700.70 = 90,160.20 : x
  2. Step 2: Convert to fraction form
    93,243.60/139,700.70 = 90,160.20/x
  3. Step 3: Cross multiply
    93,243.60x = 139,700.70 × 90,160.20
  4. Step 4: Simplify right side
    93,243.60x = 12,595,443,052.14
  5. Step 5: Solve for x
    x = 12,595,443,052.14/93,243.60
  6. Step 6: Final answer
    x = 135,081.05

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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.