Home / 112,129,378.40-168,194,067.60-77,692,001.60

Finding the Fourth Proportional to 112,129,378.40, 168,194,067.60 and 77,692,001.60

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Solution

The fourth proportional to 112,129,378.40, 168,194,067.60 and 77,692,001.60 is: 116,538,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129,378.40 : 168,194,067.60 = 77,692,001.60 : x
  2. Step 2: Convert to fraction form
    112,129,378.40/168,194,067.60 = 77,692,001.60/x
  3. Step 3: Cross multiply
    112,129,378.40x = 168,194,067.60 × 77,692,001.60
  4. Step 4: Simplify right side
    112,129,378.40x = 13,067,333,769,089,706
  5. Step 5: Solve for x
    x = 13,067,333,769,089,706/112,129,378.40
  6. Step 6: Final answer
    x = 116,538,002.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.