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Finding the Fourth Proportional to 93,169.80, 139,711.68 and 29,978.16

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Solution

The fourth proportional to 93,169.80, 139,711.68 and 29,978.16 is: 44,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,169.80 : 139,711.68 = 29,978.16 : x
  2. Step 2: Convert to fraction form
    93,169.80/139,711.68 = 29,978.16/x
  3. Step 3: Cross multiply
    93,169.80x = 139,711.68 × 29,978.16
  4. Step 4: Simplify right side
    93,169.80x = 4,188,299,096.91
  5. Step 5: Solve for x
    x = 4,188,299,096.91/93,169.80
  6. Step 6: Final answer
    x = 44,953.40

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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.