Home / 130,030.20-195,045.30-80,878.20

Finding the Fourth Proportional to 130,030.20, 195,045.30 and 80,878.20

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Solution

The fourth proportional to 130,030.20, 195,045.30 and 80,878.20 is: 121,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,030.20 : 195,045.30 = 80,878.20 : x
  2. Step 2: Convert to fraction form
    130,030.20/195,045.30 = 80,878.20/x
  3. Step 3: Cross multiply
    130,030.20x = 195,045.30 × 80,878.20
  4. Step 4: Simplify right side
    130,030.20x = 15,774,912,782.46
  5. Step 5: Solve for x
    x = 15,774,912,782.46/130,030.20
  6. Step 6: Final answer
    x = 121,317.30

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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.