Home / 131,429.18-181,372.10-70,999.80

Finding the Fourth Proportional to 131,429.18, 181,372.10 and 70,999.80

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Solution

The fourth proportional to 131,429.18, 181,372.10 and 70,999.80 is: 97,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,429.18 : 181,372.10 = 70,999.80 : x
  2. Step 2: Convert to fraction form
    131,429.18/181,372.10 = 70,999.80/x
  3. Step 3: Cross multiply
    131,429.18x = 181,372.10 × 70,999.80
  4. Step 4: Simplify right side
    131,429.18x = 12,877,382,825.58
  5. Step 5: Solve for x
    x = 12,877,382,825.58/131,429.18
  6. Step 6: Final answer
    x = 97,979.63

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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.