Home / 112,743.36-155,588.04-64,988.64

Finding the Fourth Proportional to 112,743.36, 155,588.04 and 64,988.64

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Solution

The fourth proportional to 112,743.36, 155,588.04 and 64,988.64 is: 89,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,743.36 : 155,588.04 = 64,988.64 : x
  2. Step 2: Convert to fraction form
    112,743.36/155,588.04 = 64,988.64/x
  3. Step 3: Cross multiply
    112,743.36x = 155,588.04 × 64,988.64
  4. Step 4: Simplify right side
    112,743.36x = 10,111,455,119.87
  5. Step 5: Solve for x
    x = 10,111,455,119.87/112,743.36
  6. Step 6: Final answer
    x = 89,685.59

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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.