Home / 138,412.19-207,618.31-79,206.00

Finding the Fourth Proportional to 138,412.19, 207,618.31 and 79,206.00

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Solution

The fourth proportional to 138,412.19, 207,618.31 and 79,206.00 is: 118,809.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,412.19 : 207,618.31 = 79,206.00 : x
  2. Step 2: Convert to fraction form
    138,412.19/207,618.31 = 79,206.00/x
  3. Step 3: Cross multiply
    138,412.19x = 207,618.31 × 79,206.00
  4. Step 4: Simplify right side
    138,412.19x = 16,444,615,904.62
  5. Step 5: Solve for x
    x = 16,444,615,904.62/138,412.19
  6. Step 6: Final answer
    x = 118,809.01

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1.5x scale

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.