Home / 131,810.76-181,913.58-75,231.72

Finding the Fourth Proportional to 131,810.76, 181,913.58 and 75,231.72

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Solution

The fourth proportional to 131,810.76, 181,913.58 and 75,231.72 is: 103,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,810.76 : 181,913.58 = 75,231.72 : x
  2. Step 2: Convert to fraction form
    131,810.76/181,913.58 = 75,231.72/x
  3. Step 3: Cross multiply
    131,810.76x = 181,913.58 × 75,231.72
  4. Step 4: Simplify right side
    131,810.76x = 13,685,671,514.76
  5. Step 5: Solve for x
    x = 13,685,671,514.76/131,810.76
  6. Step 6: Final answer
    x = 103,828.18

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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.