Home / 121,903,636.80-168,179,128.02-69,664,647

Finding the Fourth Proportional to 121,903,636.80, 168,179,128.02 and 69,664,647

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Solution

The fourth proportional to 121,903,636.80, 168,179,128.02 and 69,664,647 is: 96,109,844.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,903,636.80 : 168,179,128.02 = 69,664,647 : x
  2. Step 2: Convert to fraction form
    121,903,636.80/168,179,128.02 = 69,664,647/x
  3. Step 3: Cross multiply
    121,903,636.80x = 168,179,128.02 × 69,664,647
  4. Step 4: Simplify right side
    121,903,636.80x = 11,716,139,586,281,110
  5. Step 5: Solve for x
    x = 11,716,139,586,281,110/121,903,636.80
  6. Step 6: Final answer
    x = 96,109,844.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.