Home / 138,125.04-190,558.58-77,681.82

Finding the Fourth Proportional to 138,125.04, 190,558.58 and 77,681.82

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Solution

The fourth proportional to 138,125.04, 190,558.58 and 77,681.82 is: 107,170.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,125.04 : 190,558.58 = 77,681.82 : x
  2. Step 2: Convert to fraction form
    138,125.04/190,558.58 = 77,681.82/x
  3. Step 3: Cross multiply
    138,125.04x = 190,558.58 × 77,681.82
  4. Step 4: Simplify right side
    138,125.04x = 14,802,936,922.61
  5. Step 5: Solve for x
    x = 14,802,936,922.61/138,125.04
  6. Step 6: Final answer
    x = 107,170.55

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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.