Home / 145,778.48-201,180.42-81,247.74

Finding the Fourth Proportional to 145,778.48, 201,180.42 and 81,247.74

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Solution

The fourth proportional to 145,778.48, 201,180.42 and 81,247.74 is: 112,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,778.48 : 201,180.42 = 81,247.74 : x
  2. Step 2: Convert to fraction form
    145,778.48/201,180.42 = 81,247.74/x
  3. Step 3: Cross multiply
    145,778.48x = 201,180.42 × 81,247.74
  4. Step 4: Simplify right side
    145,778.48x = 16,345,454,457.25
  5. Step 5: Solve for x
    x = 16,345,454,457.25/145,778.48
  6. Step 6: Final answer
    x = 112,125.29

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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.