Home / 131,830.43-181,925.54-71,400.92

Finding the Fourth Proportional to 131,830.43, 181,925.54 and 71,400.92

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Solution

The fourth proportional to 131,830.43, 181,925.54 and 71,400.92 is: 98,533.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,830.43 : 181,925.54 = 71,400.92 : x
  2. Step 2: Convert to fraction form
    131,830.43/181,925.54 = 71,400.92/x
  3. Step 3: Cross multiply
    131,830.43x = 181,925.54 × 71,400.92
  4. Step 4: Simplify right side
    131,830.43x = 12,989,649,660.86
  5. Step 5: Solve for x
    x = 12,989,649,660.86/131,830.43
  6. Step 6: Final answer
    x = 98,533.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.