Home / 100,087.04-138,170.09-57,637.37

Finding the Fourth Proportional to 100,087.04, 138,170.09 and 57,637.37

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Solution

The fourth proportional to 100,087.04, 138,170.09 and 57,637.37 is: 79,568.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,087.04 : 138,170.09 = 57,637.37 : x
  2. Step 2: Convert to fraction form
    100,087.04/138,170.09 = 57,637.37/x
  3. Step 3: Cross multiply
    100,087.04x = 138,170.09 × 57,637.37
  4. Step 4: Simplify right side
    100,087.04x = 7,963,759,621.23
  5. Step 5: Solve for x
    x = 7,963,759,621.23/100,087.04
  6. Step 6: Final answer
    x = 79,568.34

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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.