Home / 127,991,929.85-176,563,791.92-77,742,776.78

Finding the Fourth Proportional to 127,991,929.85, 176,563,791.92 and 77,742,776.78

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Solution

The fourth proportional to 127,991,929.85, 176,563,791.92 and 77,742,776.78 is: 107,245,507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,991,929.85 : 176,563,791.92 = 77,742,776.78 : x
  2. Step 2: Convert to fraction form
    127,991,929.85/176,563,791.92 = 77,742,776.78/x
  3. Step 3: Cross multiply
    127,991,929.85x = 176,563,791.92 × 77,742,776.78
  4. Step 4: Simplify right side
    127,991,929.85x = 13,726,559,461,395,396
  5. Step 5: Solve for x
    x = 13,726,559,461,395,396/127,991,929.85
  6. Step 6: Final answer
    x = 107,245,507.42

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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.