Home / 121,144,824-167,178,991.68-66,140,678.72

Finding the Fourth Proportional to 121,144,824, 167,178,991.68 and 66,140,678.72

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Solution

The fourth proportional to 121,144,824, 167,178,991.68 and 66,140,678.72 is: 91,273,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,144,824 : 167,178,991.68 = 66,140,678.72 : x
  2. Step 2: Convert to fraction form
    121,144,824/167,178,991.68 = 66,140,678.72/x
  3. Step 3: Cross multiply
    121,144,824x = 167,178,991.68 × 66,140,678.72
  4. Step 4: Simplify right side
    121,144,824x = 11,057,331,977,440,434
  5. Step 5: Solve for x
    x = 11,057,331,977,440,434/121,144,824
  6. Step 6: Final answer
    x = 91,273,664.13

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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.