Home / 138,312.27-190,855.08-77,881.41

Finding the Fourth Proportional to 138,312.27, 190,855.08 and 77,881.41

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Solution

The fourth proportional to 138,312.27, 190,855.08 and 77,881.41 is: 107,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,312.27 : 190,855.08 = 77,881.41 : x
  2. Step 2: Convert to fraction form
    138,312.27/190,855.08 = 77,881.41/x
  3. Step 3: Cross multiply
    138,312.27x = 190,855.08 × 77,881.41
  4. Step 4: Simplify right side
    138,312.27x = 14,864,062,736.06
  5. Step 5: Solve for x
    x = 14,864,062,736.06/138,312.27
  6. Step 6: Final answer
    x = 107,467.42

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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.