Home / 190,420.97-262,781.15-105,538.10

Finding the Fourth Proportional to 190,420.97, 262,781.15 and 105,538.10

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Solution

The fourth proportional to 190,420.97, 262,781.15 and 105,538.10 is: 145,642.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,420.97 : 262,781.15 = 105,538.10 : x
  2. Step 2: Convert to fraction form
    190,420.97/262,781.15 = 105,538.10/x
  3. Step 3: Cross multiply
    190,420.97x = 262,781.15 × 105,538.10
  4. Step 4: Simplify right side
    190,420.97x = 27,733,421,445.22
  5. Step 5: Solve for x
    x = 27,733,421,445.22/190,420.97
  6. Step 6: Final answer
    x = 145,642.69

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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.