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Finding the Fourth Proportional to 93,428.60, 140,142.90 and 72,433.40

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Solution

The fourth proportional to 93,428.60, 140,142.90 and 72,433.40 is: 108,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,428.60 : 140,142.90 = 72,433.40 : x
  2. Step 2: Convert to fraction form
    93,428.60/140,142.90 = 72,433.40/x
  3. Step 3: Cross multiply
    93,428.60x = 140,142.90 × 72,433.40
  4. Step 4: Simplify right side
    93,428.60x = 10,151,026,732.86
  5. Step 5: Solve for x
    x = 10,151,026,732.86/93,428.60
  6. Step 6: Final answer
    x = 108,650.10

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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.