Home / 138,039.02-190,416.05-82,834.07

Finding the Fourth Proportional to 138,039.02, 190,416.05 and 82,834.07

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Solution

The fourth proportional to 138,039.02, 190,416.05 and 82,834.07 is: 114,264.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.02 : 190,416.05 = 82,834.07 : x
  2. Step 2: Convert to fraction form
    138,039.02/190,416.05 = 82,834.07/x
  3. Step 3: Cross multiply
    138,039.02x = 190,416.05 × 82,834.07
  4. Step 4: Simplify right side
    138,039.02x = 15,772,935,462.74
  5. Step 5: Solve for x
    x = 15,772,935,462.74/138,039.02
  6. Step 6: Final answer
    x = 114,264.33

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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.