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Finding the Fourth Proportional to 93,356.84, 139,910.18 and 87,378.12

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Solution

The fourth proportional to 93,356.84, 139,910.18 and 87,378.12 is: 130,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,356.84 : 139,910.18 = 87,378.12 : x
  2. Step 2: Convert to fraction form
    93,356.84/139,910.18 = 87,378.12/x
  3. Step 3: Cross multiply
    93,356.84x = 139,910.18 × 87,378.12
  4. Step 4: Simplify right side
    93,356.84x = 12,225,088,060.37
  5. Step 5: Solve for x
    x = 12,225,088,060.37/93,356.84
  6. Step 6: Final answer
    x = 130,950.10

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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.