Home / 81,673,277.60-122,509,916.40-74,115,005.60

Finding the Fourth Proportional to 81,673,277.60, 122,509,916.40 and 74,115,005.60

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Solution

The fourth proportional to 81,673,277.60, 122,509,916.40 and 74,115,005.60 is: 111,172,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,673,277.60 : 122,509,916.40 = 74,115,005.60 : x
  2. Step 2: Convert to fraction form
    81,673,277.60/122,509,916.40 = 74,115,005.60/x
  3. Step 3: Cross multiply
    81,673,277.60x = 122,509,916.40 × 74,115,005.60
  4. Step 4: Simplify right side
    81,673,277.60x = 9,079,823,140,041,532
  5. Step 5: Solve for x
    x = 9,079,823,140,041,532/81,673,277.60
  6. Step 6: Final answer
    x = 111,172,508.40

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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.