Home / 144,292,388.40-199,118,161.40-78,211,467.88

Finding the Fourth Proportional to 144,292,388.40, 199,118,161.40 and 78,211,467.88

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Solution

The fourth proportional to 144,292,388.40, 199,118,161.40 and 78,211,467.88 is: 107,928,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,292,388.40 : 199,118,161.40 = 78,211,467.88 : x
  2. Step 2: Convert to fraction form
    144,292,388.40/199,118,161.40 = 78,211,467.88/x
  3. Step 3: Cross multiply
    144,292,388.40x = 199,118,161.40 × 78,211,467.88
  4. Step 4: Simplify right side
    144,292,388.40x = 15,573,323,683,771,904
  5. Step 5: Solve for x
    x = 15,573,323,683,771,904/144,292,388.40
  6. Step 6: Final answer
    x = 107,928,934.13

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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.