Home / 112,399,408.80-168,557,122.80-78,219,223.20

Finding the Fourth Proportional to 112,399,408.80, 168,557,122.80 and 78,219,223.20

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Solution

The fourth proportional to 112,399,408.80, 168,557,122.80 and 78,219,223.20 is: 117,299,613.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,399,408.80 : 168,557,122.80 = 78,219,223.20 : x
  2. Step 2: Convert to fraction form
    112,399,408.80/168,557,122.80 = 78,219,223.20/x
  3. Step 3: Cross multiply
    112,399,408.80x = 168,557,122.80 × 78,219,223.20
  4. Step 4: Simplify right side
    112,399,408.80x = 13,184,407,210,243,010
  5. Step 5: Solve for x
    x = 13,184,407,210,243,010/112,399,408.80
  6. Step 6: Final answer
    x = 117,299,613.50

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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.