Home / 81,432,078.40-122,148,117.60-73,369,921.60

Finding the Fourth Proportional to 81,432,078.40, 122,148,117.60 and 73,369,921.60

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Solution

The fourth proportional to 81,432,078.40, 122,148,117.60 and 73,369,921.60 is: 110,054,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,432,078.40 : 122,148,117.60 = 73,369,921.60 : x
  2. Step 2: Convert to fraction form
    81,432,078.40/122,148,117.60 = 73,369,921.60/x
  3. Step 3: Cross multiply
    81,432,078.40x = 122,148,117.60 × 73,369,921.60
  4. Step 4: Simplify right side
    81,432,078.40x = 8,961,997,811,899,579
  5. Step 5: Solve for x
    x = 8,961,997,811,899,579/81,432,078.40
  6. Step 6: Final answer
    x = 110,054,882.40

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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.