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Finding the Fourth Proportional to 93,308.80, 139,963.20 and 91,998.40

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Solution

The fourth proportional to 93,308.80, 139,963.20 and 91,998.40 is: 137,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,308.80 : 139,963.20 = 91,998.40 : x
  2. Step 2: Convert to fraction form
    93,308.80/139,963.20 = 91,998.40/x
  3. Step 3: Cross multiply
    93,308.80x = 139,963.20 × 91,998.40
  4. Step 4: Simplify right side
    93,308.80x = 12,876,390,458.88
  5. Step 5: Solve for x
    x = 12,876,390,458.88/93,308.80
  6. Step 6: Final answer
    x = 137,997.60

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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.