Home / 81,683,715.60-122,525,573.40-81,205,418.70

Finding the Fourth Proportional to 81,683,715.60, 122,525,573.40 and 81,205,418.70

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Solution

The fourth proportional to 81,683,715.60, 122,525,573.40 and 81,205,418.70 is: 121,808,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,683,715.60 : 122,525,573.40 = 81,205,418.70 : x
  2. Step 2: Convert to fraction form
    81,683,715.60/122,525,573.40 = 81,205,418.70/x
  3. Step 3: Cross multiply
    81,683,715.60x = 122,525,573.40 × 81,205,418.70
  4. Step 4: Simplify right side
    81,683,715.60x = 9,949,740,489,404,584
  5. Step 5: Solve for x
    x = 9,949,740,489,404,584/81,683,715.60
  6. Step 6: Final answer
    x = 121,808,128.05

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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.