Home / 78,256.36-117,122.10-64,215.82

Finding the Fourth Proportional to 78,256.36, 117,122.10 and 64,215.82

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Solution

The fourth proportional to 78,256.36, 117,122.10 and 64,215.82 is: 96,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,256.36 : 117,122.10 = 64,215.82 : x
  2. Step 2: Convert to fraction form
    78,256.36/117,122.10 = 64,215.82/x
  3. Step 3: Cross multiply
    78,256.36x = 117,122.10 × 64,215.82
  4. Step 4: Simplify right side
    78,256.36x = 7,521,091,691.62
  5. Step 5: Solve for x
    x = 7,521,091,691.62/78,256.36
  6. Step 6: Final answer
    x = 96,108.38

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1.5x scale

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.