Home / 138,729.07-208,088.75-38,888.47

Finding the Fourth Proportional to 138,729.07, 208,088.75 and 38,888.47

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Solution

The fourth proportional to 138,729.07, 208,088.75 and 38,888.47 is: 58,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,729.07 : 208,088.75 = 38,888.47 : x
  2. Step 2: Convert to fraction form
    138,729.07/208,088.75 = 38,888.47/x
  3. Step 3: Cross multiply
    138,729.07x = 208,088.75 × 38,888.47
  4. Step 4: Simplify right side
    138,729.07x = 8,092,252,917.27
  5. Step 5: Solve for x
    x = 8,092,252,917.27/138,729.07
  6. Step 6: Final answer
    x = 58,331.34

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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.