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Finding the Fourth Proportional to 93,431.70, 140,147.55 and 31,102.20

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Solution

The fourth proportional to 93,431.70, 140,147.55 and 31,102.20 is: 46,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,431.70 : 140,147.55 = 31,102.20 : x
  2. Step 2: Convert to fraction form
    93,431.70/140,147.55 = 31,102.20/x
  3. Step 3: Cross multiply
    93,431.70x = 140,147.55 × 31,102.20
  4. Step 4: Simplify right side
    93,431.70x = 4,358,897,129.61
  5. Step 5: Solve for x
    x = 4,358,897,129.61/93,431.70
  6. Step 6: Final answer
    x = 46,653.30

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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.