Home / 144,292,390.74-199,118,164.59-78,211,470.20

Finding the Fourth Proportional to 144,292,390.74, 199,118,164.59 and 78,211,470.20

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Solution

The fourth proportional to 144,292,390.74, 199,118,164.59 and 78,211,470.20 is: 107,928,937.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,292,390.74 : 199,118,164.59 = 78,211,470.20 : x
  2. Step 2: Convert to fraction form
    144,292,390.74/199,118,164.59 = 78,211,470.20/x
  3. Step 3: Cross multiply
    144,292,390.74x = 199,118,164.59 × 78,211,470.20
  4. Step 4: Simplify right side
    144,292,390.74x = 15,573,324,395,113,888
  5. Step 5: Solve for x
    x = 15,573,324,395,113,888/144,292,390.74
  6. Step 6: Final answer
    x = 107,928,937.31

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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.