Home / 121,386.70-181,982.85-51,208.30

Finding the Fourth Proportional to 121,386.70, 181,982.85 and 51,208.30

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Solution

The fourth proportional to 121,386.70, 181,982.85 and 51,208.30 is: 76,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,386.70 : 181,982.85 = 51,208.30 : x
  2. Step 2: Convert to fraction form
    121,386.70/181,982.85 = 51,208.30/x
  3. Step 3: Cross multiply
    121,386.70x = 181,982.85 × 51,208.30
  4. Step 4: Simplify right side
    121,386.70x = 9,319,032,377.66
  5. Step 5: Solve for x
    x = 9,319,032,377.66/121,386.70
  6. Step 6: Final answer
    x = 76,771.45

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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.