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Finding the Fourth Proportional to 93,459.56, 139,523.57 and 90,178.88

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Solution

The fourth proportional to 93,459.56, 139,523.57 and 90,178.88 is: 134,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,459.56 : 139,523.57 = 90,178.88 : x
  2. Step 2: Convert to fraction form
    93,459.56/139,523.57 = 90,178.88/x
  3. Step 3: Cross multiply
    93,459.56x = 139,523.57 × 90,178.88
  4. Step 4: Simplify right side
    93,459.56x = 12,582,079,276.20
  5. Step 5: Solve for x
    x = 12,582,079,276.20/93,459.56
  6. Step 6: Final answer
    x = 134,625.92

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1.5x scale

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.