Home / 122,079,507-168,428,053.86-75,652,821.24

Finding the Fourth Proportional to 122,079,507, 168,428,053.86 and 75,652,821.24

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Solution

The fourth proportional to 122,079,507, 168,428,053.86 and 75,652,821.24 is: 104,375,072.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,079,507 : 168,428,053.86 = 75,652,821.24 : x
  2. Step 2: Convert to fraction form
    122,079,507/168,428,053.86 = 75,652,821.24/x
  3. Step 3: Cross multiply
    122,079,507x = 168,428,053.86 × 75,652,821.24
  4. Step 4: Simplify right side
    122,079,507x = 12,742,057,450,471,672
  5. Step 5: Solve for x
    x = 12,742,057,450,471,672/122,079,507
  6. Step 6: Final answer
    x = 104,375,072.96

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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.