Home / 130,020.30-195,030.45-121,272.30

Finding the Fourth Proportional to 130,020.30, 195,030.45 and 121,272.30

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Solution

The fourth proportional to 130,020.30, 195,030.45 and 121,272.30 is: 181,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,020.30 : 195,030.45 = 121,272.30 : x
  2. Step 2: Convert to fraction form
    130,020.30/195,030.45 = 121,272.30/x
  3. Step 3: Cross multiply
    130,020.30x = 195,030.45 × 121,272.30
  4. Step 4: Simplify right side
    130,020.30x = 23,651,791,241.54
  5. Step 5: Solve for x
    x = 23,651,791,241.54/130,020.30
  6. Step 6: Final answer
    x = 181,908.45

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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.