Home / 131,117.74-180,768.26-85,717.66

Finding the Fourth Proportional to 131,117.74, 180,768.26 and 85,717.66

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Solution

The fourth proportional to 131,117.74, 180,768.26 and 85,717.66 is: 118,176.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,117.74 : 180,768.26 = 85,717.66 : x
  2. Step 2: Convert to fraction form
    131,117.74/180,768.26 = 85,717.66/x
  3. Step 3: Cross multiply
    131,117.74x = 180,768.26 × 85,717.66
  4. Step 4: Simplify right side
    131,117.74x = 15,495,032,249.47
  5. Step 5: Solve for x
    x = 15,495,032,249.47/131,117.74
  6. Step 6: Final answer
    x = 118,176.48

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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.