Home / 114,128.18-157,518.51-76,467.86

Finding the Fourth Proportional to 114,128.18, 157,518.51 and 76,467.86

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Solution

The fourth proportional to 114,128.18, 157,518.51 and 76,467.86 is: 105,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,128.18 : 157,518.51 = 76,467.86 : x
  2. Step 2: Convert to fraction form
    114,128.18/157,518.51 = 76,467.86/x
  3. Step 3: Cross multiply
    114,128.18x = 157,518.51 × 76,467.86
  4. Step 4: Simplify right side
    114,128.18x = 12,045,103,370.09
  5. Step 5: Solve for x
    x = 12,045,103,370.09/114,128.18
  6. Step 6: Final answer
    x = 105,540.13

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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.