Home / 138,075.41-190,545.17-76,822.48

Finding the Fourth Proportional to 138,075.41, 190,545.17 and 76,822.48

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Solution

The fourth proportional to 138,075.41, 190,545.17 and 76,822.48 is: 106,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,075.41 : 190,545.17 = 76,822.48 : x
  2. Step 2: Convert to fraction form
    138,075.41/190,545.17 = 76,822.48/x
  3. Step 3: Cross multiply
    138,075.41x = 190,545.17 × 76,822.48
  4. Step 4: Simplify right side
    138,075.41x = 14,638,152,127.31
  5. Step 5: Solve for x
    x = 14,638,152,127.31/138,075.41
  6. Step 6: Final answer
    x = 106,015.64

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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.