Home / 126,609,803.31-190,132,042.39-77,712,784.89

Finding the Fourth Proportional to 126,609,803.31, 190,132,042.39 and 77,712,784.89

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Solution

The fourth proportional to 126,609,803.31, 190,132,042.39 and 77,712,784.89 is: 116,702,578.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,609,803.31 : 190,132,042.39 = 77,712,784.89 : x
  2. Step 2: Convert to fraction form
    126,609,803.31/190,132,042.39 = 77,712,784.89/x
  3. Step 3: Cross multiply
    126,609,803.31x = 190,132,042.39 × 77,712,784.89
  4. Step 4: Simplify right side
    126,609,803.31x = 14,775,690,510,756,148
  5. Step 5: Solve for x
    x = 14,775,690,510,756,148/126,609,803.31
  6. Step 6: Final answer
    x = 116,702,578.51

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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.