Home / 114,970.18-158,523.14-78,689.12

Finding the Fourth Proportional to 114,970.18, 158,523.14 and 78,689.12

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Solution

The fourth proportional to 114,970.18, 158,523.14 and 78,689.12 is: 108,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,970.18 : 158,523.14 = 78,689.12 : x
  2. Step 2: Convert to fraction form
    114,970.18/158,523.14 = 78,689.12/x
  3. Step 3: Cross multiply
    114,970.18x = 158,523.14 × 78,689.12
  4. Step 4: Simplify right side
    114,970.18x = 12,474,045,992.79
  5. Step 5: Solve for x
    x = 12,474,045,992.79/114,970.18
  6. Step 6: Final answer
    x = 108,498.10

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1.5x scale

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.