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Finding the Fourth Proportional to 93,486.40, 140,230.40 and 31,156.90

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Solution

The fourth proportional to 93,486.40, 140,230.40 and 31,156.90 is: 46,735.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,486.40 : 140,230.40 = 31,156.90 : x
  2. Step 2: Convert to fraction form
    93,486.40/140,230.40 = 31,156.90/x
  3. Step 3: Cross multiply
    93,486.40x = 140,230.40 × 31,156.90
  4. Step 4: Simplify right side
    93,486.40x = 4,369,144,549.76
  5. Step 5: Solve for x
    x = 4,369,144,549.76/93,486.40
  6. Step 6: Final answer
    x = 46,735.62

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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.