Home / 149,006.81-205,629.41-81,938.81

Finding the Fourth Proportional to 149,006.81, 205,629.41 and 81,938.81

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Solution

The fourth proportional to 149,006.81, 205,629.41 and 81,938.81 is: 113,075.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,006.81 : 205,629.41 = 81,938.81 : x
  2. Step 2: Convert to fraction form
    149,006.81/205,629.41 = 81,938.81/x
  3. Step 3: Cross multiply
    149,006.81x = 205,629.41 × 81,938.81
  4. Step 4: Simplify right side
    149,006.81x = 16,849,029,875.32
  5. Step 5: Solve for x
    x = 16,849,029,875.32/149,006.81
  6. Step 6: Final answer
    x = 113,075.57

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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.