Home / 135,619.00-187,154.93-78,260.72

Finding the Fourth Proportional to 135,619.00, 187,154.93 and 78,260.72

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Solution

The fourth proportional to 135,619.00, 187,154.93 and 78,260.72 is: 108,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,619.00 : 187,154.93 = 78,260.72 : x
  2. Step 2: Convert to fraction form
    135,619.00/187,154.93 = 78,260.72/x
  3. Step 3: Cross multiply
    135,619.00x = 187,154.93 × 78,260.72
  4. Step 4: Simplify right side
    135,619.00x = 14,646,878,833.23
  5. Step 5: Solve for x
    x = 14,646,878,833.23/135,619.00
  6. Step 6: Final answer
    x = 108,000.20

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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.