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Finding the Fourth Proportional to 93,992,562.60, 140,988,843.90 and 85,914,659.40

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Solution

The fourth proportional to 93,992,562.60, 140,988,843.90 and 85,914,659.40 is: 128,871,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,992,562.60 : 140,988,843.90 = 85,914,659.40 : x
  2. Step 2: Convert to fraction form
    93,992,562.60/140,988,843.90 = 85,914,659.40/x
  3. Step 3: Cross multiply
    93,992,562.60x = 140,988,843.90 × 85,914,659.40
  4. Step 4: Simplify right side
    93,992,562.60x = 12,113,008,502,868,270
  5. Step 5: Solve for x
    x = 12,113,008,502,868,270/93,992,562.60
  6. Step 6: Final answer
    x = 128,871,989.10

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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.