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Finding the Fourth Proportional to 93,320.80, 139,981.20 and 88,266.40

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Solution

The fourth proportional to 93,320.80, 139,981.20 and 88,266.40 is: 132,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,320.80 : 139,981.20 = 88,266.40 : x
  2. Step 2: Convert to fraction form
    93,320.80/139,981.20 = 88,266.40/x
  3. Step 3: Cross multiply
    93,320.80x = 139,981.20 × 88,266.40
  4. Step 4: Simplify right side
    93,320.80x = 12,355,636,591.68
  5. Step 5: Solve for x
    x = 12,355,636,591.68/93,320.80
  6. Step 6: Final answer
    x = 132,399.60

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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.