Home / 160,850.45-221,971.55-87,261.79

Finding the Fourth Proportional to 160,850.45, 221,971.55 and 87,261.79

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Solution

The fourth proportional to 160,850.45, 221,971.55 and 87,261.79 is: 120,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,850.45 : 221,971.55 = 87,261.79 : x
  2. Step 2: Convert to fraction form
    160,850.45/221,971.55 = 87,261.79/x
  3. Step 3: Cross multiply
    160,850.45x = 221,971.55 × 87,261.79
  4. Step 4: Simplify right side
    160,850.45x = 19,369,634,782.07
  5. Step 5: Solve for x
    x = 19,369,634,782.07/160,850.45
  6. Step 6: Final answer
    x = 120,420.15

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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.