Home / 98,131.18-135,418.89-57,302.32

Finding the Fourth Proportional to 98,131.18, 135,418.89 and 57,302.32

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Solution

The fourth proportional to 98,131.18, 135,418.89 and 57,302.32 is: 79,075.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,131.18 : 135,418.89 = 57,302.32 : x
  2. Step 2: Convert to fraction form
    98,131.18/135,418.89 = 57,302.32/x
  3. Step 3: Cross multiply
    98,131.18x = 135,418.89 × 57,302.32
  4. Step 4: Simplify right side
    98,131.18x = 7,759,816,568.82
  5. Step 5: Solve for x
    x = 7,759,816,568.82/98,131.18
  6. Step 6: Final answer
    x = 79,075.95

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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.