Home / 131,666.42-181,702.78-75,083.06

Finding the Fourth Proportional to 131,666.42, 181,702.78 and 75,083.06

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Solution

The fourth proportional to 131,666.42, 181,702.78 and 75,083.06 is: 103,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,666.42 : 181,702.78 = 75,083.06 : x
  2. Step 2: Convert to fraction form
    131,666.42/181,702.78 = 75,083.06/x
  3. Step 3: Cross multiply
    131,666.42x = 181,702.78 × 75,083.06
  4. Step 4: Simplify right side
    131,666.42x = 13,642,800,732.91
  5. Step 5: Solve for x
    x = 13,642,800,732.91/131,666.42
  6. Step 6: Final answer
    x = 103,616.40

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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.