Home / 187,488,015.40-281,232,023.10-79,768,642.60

Finding the Fourth Proportional to 187,488,015.40, 281,232,023.10 and 79,768,642.60

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Solution

The fourth proportional to 187,488,015.40, 281,232,023.10 and 79,768,642.60 is: 119,652,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,488,015.40 : 281,232,023.10 = 79,768,642.60 : x
  2. Step 2: Convert to fraction form
    187,488,015.40/281,232,023.10 = 79,768,642.60/x
  3. Step 3: Cross multiply
    187,488,015.40x = 281,232,023.10 × 79,768,642.60
  4. Step 4: Simplify right side
    187,488,015.40x = 22,433,496,738,338,844
  5. Step 5: Solve for x
    x = 22,433,496,738,338,844/187,488,015.40
  6. Step 6: Final answer
    x = 119,652,963.90

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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.