Home / 138,200.50-190,717.46-77,772.16

Finding the Fourth Proportional to 138,200.50, 190,717.46 and 77,772.16

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Solution

The fourth proportional to 138,200.50, 190,717.46 and 77,772.16 is: 107,326.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,200.50 : 190,717.46 = 77,772.16 : x
  2. Step 2: Convert to fraction form
    138,200.50/190,717.46 = 77,772.16/x
  3. Step 3: Cross multiply
    138,200.50x = 190,717.46 × 77,772.16
  4. Step 4: Simplify right side
    138,200.50x = 14,832,508,813.91
  5. Step 5: Solve for x
    x = 14,832,508,813.91/138,200.50
  6. Step 6: Final answer
    x = 107,326.01

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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.