Home / 154,001.09-212,519.25-86,019.05

Finding the Fourth Proportional to 154,001.09, 212,519.25 and 86,019.05

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Solution

The fourth proportional to 154,001.09, 212,519.25 and 86,019.05 is: 118,705.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,001.09 : 212,519.25 = 86,019.05 : x
  2. Step 2: Convert to fraction form
    154,001.09/212,519.25 = 86,019.05/x
  3. Step 3: Cross multiply
    154,001.09x = 212,519.25 × 86,019.05
  4. Step 4: Simplify right side
    154,001.09x = 18,280,703,991.71
  5. Step 5: Solve for x
    x = 18,280,703,991.71/154,001.09
  6. Step 6: Final answer
    x = 118,705.03

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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.