Home / 189,659.07-261,726.39-103,615.20

Finding the Fourth Proportional to 189,659.07, 261,726.39 and 103,615.20

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Solution

The fourth proportional to 189,659.07, 261,726.39 and 103,615.20 is: 142,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,659.07 : 261,726.39 = 103,615.20 : x
  2. Step 2: Convert to fraction form
    189,659.07/261,726.39 = 103,615.20/x
  3. Step 3: Cross multiply
    189,659.07x = 261,726.39 × 103,615.20
  4. Step 4: Simplify right side
    189,659.07x = 27,118,832,245.13
  5. Step 5: Solve for x
    x = 27,118,832,245.13/189,659.07
  6. Step 6: Final answer
    x = 142,987.27

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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.