Home / 154,119.67-212,681.14-86,137.21

Finding the Fourth Proportional to 154,119.67, 212,681.14 and 86,137.21

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Solution

The fourth proportional to 154,119.67, 212,681.14 and 86,137.21 is: 118,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,119.67 : 212,681.14 = 86,137.21 : x
  2. Step 2: Convert to fraction form
    154,119.67/212,681.14 = 86,137.21/x
  3. Step 3: Cross multiply
    154,119.67x = 212,681.14 × 86,137.21
  4. Step 4: Simplify right side
    154,119.67x = 18,319,760,019.22
  5. Step 5: Solve for x
    x = 18,319,760,019.22/154,119.67
  6. Step 6: Final answer
    x = 118,867.11

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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.