Home / 114,971.18-158,524.51-78,690.12

Finding the Fourth Proportional to 114,971.18, 158,524.51 and 78,690.12

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Solution

The fourth proportional to 114,971.18, 158,524.51 and 78,690.12 is: 108,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,971.18 : 158,524.51 = 78,690.12 : x
  2. Step 2: Convert to fraction form
    114,971.18/158,524.51 = 78,690.12/x
  3. Step 3: Cross multiply
    114,971.18x = 158,524.51 × 78,690.12
  4. Step 4: Simplify right side
    114,971.18x = 12,474,312,714.84
  5. Step 5: Solve for x
    x = 12,474,312,714.84/114,971.18
  6. Step 6: Final answer
    x = 108,499.48

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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.