Home / 138,312.84-190,889.90-77,895.29

Finding the Fourth Proportional to 138,312.84, 190,889.90 and 77,895.29

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Solution

The fourth proportional to 138,312.84, 190,889.90 and 77,895.29 is: 107,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,312.84 : 190,889.90 = 77,895.29 : x
  2. Step 2: Convert to fraction form
    138,312.84/190,889.90 = 77,895.29/x
  3. Step 3: Cross multiply
    138,312.84x = 190,889.90 × 77,895.29
  4. Step 4: Simplify right side
    138,312.84x = 14,869,424,936.59
  5. Step 5: Solve for x
    x = 14,869,424,936.59/138,312.84
  6. Step 6: Final answer
    x = 107,505.75

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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.