Home / 138,097.47-190,600.69-86,438.53

Finding the Fourth Proportional to 138,097.47, 190,600.69 and 86,438.53

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Solution

The fourth proportional to 138,097.47, 190,600.69 and 86,438.53 is: 119,301.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,097.47 : 190,600.69 = 86,438.53 : x
  2. Step 2: Convert to fraction form
    138,097.47/190,600.69 = 86,438.53/x
  3. Step 3: Cross multiply
    138,097.47x = 190,600.69 × 86,438.53
  4. Step 4: Simplify right side
    138,097.47x = 16,475,243,028.39
  5. Step 5: Solve for x
    x = 16,475,243,028.39/138,097.47
  6. Step 6: Final answer
    x = 119,301.55

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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.