Home / 143,565,083.76-198,118,807.74-78,374,987.76

Finding the Fourth Proportional to 143,565,083.76, 198,118,807.74 and 78,374,987.76

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Solution

The fourth proportional to 143,565,083.76, 198,118,807.74 and 78,374,987.76 is: 108,156,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,565,083.76 : 198,118,807.74 = 78,374,987.76 : x
  2. Step 2: Convert to fraction form
    143,565,083.76/198,118,807.74 = 78,374,987.76/x
  3. Step 3: Cross multiply
    143,565,083.76x = 198,118,807.74 × 78,374,987.76
  4. Step 4: Simplify right side
    143,565,083.76x = 15,527,559,131,648,296
  5. Step 5: Solve for x
    x = 15,527,559,131,648,296/143,565,083.76
  6. Step 6: Final answer
    x = 108,156,932.90

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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.