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Finding the Fourth Proportional to 93,457.68, 139,520.70 and 90,176.88

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Solution

The fourth proportional to 93,457.68, 139,520.70 and 90,176.88 is: 134,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,457.68 : 139,520.70 = 90,176.88 : x
  2. Step 2: Convert to fraction form
    93,457.68/139,520.70 = 90,176.88/x
  3. Step 3: Cross multiply
    93,457.68x = 139,520.70 × 90,176.88
  4. Step 4: Simplify right side
    93,457.68x = 12,581,541,421.42
  5. Step 5: Solve for x
    x = 12,581,541,421.42/93,457.68
  6. Step 6: Final answer
    x = 134,622.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.