Home / 102,686.93-141,615.86-85,516.15

Finding the Fourth Proportional to 102,686.93, 141,615.86 and 85,516.15

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Solution

The fourth proportional to 102,686.93, 141,615.86 and 85,516.15 is: 117,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,686.93 : 141,615.86 = 85,516.15 : x
  2. Step 2: Convert to fraction form
    102,686.93/141,615.86 = 85,516.15/x
  3. Step 3: Cross multiply
    102,686.93x = 141,615.86 × 85,516.15
  4. Step 4: Simplify right side
    102,686.93x = 12,110,442,418.06
  5. Step 5: Solve for x
    x = 12,110,442,418.06/102,686.93
  6. Step 6: Final answer
    x = 117,935.58

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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.