Home / 138,007.53-190,396.44-77,564.25

Finding the Fourth Proportional to 138,007.53, 190,396.44 and 77,564.25

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Solution

The fourth proportional to 138,007.53, 190,396.44 and 77,564.25 is: 107,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,007.53 : 190,396.44 = 77,564.25 : x
  2. Step 2: Convert to fraction form
    138,007.53/190,396.44 = 77,564.25/x
  3. Step 3: Cross multiply
    138,007.53x = 190,396.44 × 77,564.25
  4. Step 4: Simplify right side
    138,007.53x = 14,767,957,071.27
  5. Step 5: Solve for x
    x = 14,767,957,071.27/138,007.53
  6. Step 6: Final answer
    x = 107,008.34

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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.