Home / 144,642,386.32-199,607,957.88-78,564,174.88

Finding the Fourth Proportional to 144,642,386.32, 199,607,957.88 and 78,564,174.88

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Solution

The fourth proportional to 144,642,386.32, 199,607,957.88 and 78,564,174.88 is: 108,419,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,642,386.32 : 199,607,957.88 = 78,564,174.88 : x
  2. Step 2: Convert to fraction form
    144,642,386.32/199,607,957.88 = 78,564,174.88/x
  3. Step 3: Cross multiply
    144,642,386.32x = 199,607,957.88 × 78,564,174.88
  4. Step 4: Simplify right side
    144,642,386.32x = 15,682,034,510,323,992
  5. Step 5: Solve for x
    x = 15,682,034,510,323,992/144,642,386.32
  6. Step 6: Final answer
    x = 108,419,356.93

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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.