Home / 130,400.40-195,600.60-121,587.60

Finding the Fourth Proportional to 130,400.40, 195,600.60 and 121,587.60

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Solution

The fourth proportional to 130,400.40, 195,600.60 and 121,587.60 is: 182,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,400.40 : 195,600.60 = 121,587.60 : x
  2. Step 2: Convert to fraction form
    130,400.40/195,600.60 = 121,587.60/x
  3. Step 3: Cross multiply
    130,400.40x = 195,600.60 × 121,587.60
  4. Step 4: Simplify right side
    130,400.40x = 23,782,607,512.56
  5. Step 5: Solve for x
    x = 23,782,607,512.56/130,400.40
  6. Step 6: Final answer
    x = 182,381.40

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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.