Home / 138,030.59-206,962.25-90,035.04

Finding the Fourth Proportional to 138,030.59, 206,962.25 and 90,035.04

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Solution

The fourth proportional to 138,030.59, 206,962.25 and 90,035.04 is: 134,998.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,030.59 : 206,962.25 = 90,035.04 : x
  2. Step 2: Convert to fraction form
    138,030.59/206,962.25 = 90,035.04/x
  3. Step 3: Cross multiply
    138,030.59x = 206,962.25 × 90,035.04
  4. Step 4: Simplify right side
    138,030.59x = 18,633,854,007.06
  5. Step 5: Solve for x
    x = 18,633,854,007.06/138,030.59
  6. Step 6: Final answer
    x = 134,998.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.