Home / 131,683.10-181,722.08-71,254.80

Finding the Fourth Proportional to 131,683.10, 181,722.08 and 71,254.80

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Solution

The fourth proportional to 131,683.10, 181,722.08 and 71,254.80 is: 98,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,683.10 : 181,722.08 = 71,254.80 : x
  2. Step 2: Convert to fraction form
    131,683.10/181,722.08 = 71,254.80/x
  3. Step 3: Cross multiply
    131,683.10x = 181,722.08 × 71,254.80
  4. Step 4: Simplify right side
    131,683.10x = 12,948,570,109.71
  5. Step 5: Solve for x
    x = 12,948,570,109.71/131,683.10
  6. Step 6: Final answer
    x = 98,331.30

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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.