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Finding the Fourth Proportional to 160,783.55, 221,894.60 and 89,186.70

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Solution

The fourth proportional to 160,783.55, 221,894.60 and 89,186.70 is: 123,085.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,783.55 : 221,894.60 = 89,186.70 : x
  2. Step 2: Convert to fraction form
    160,783.55/221,894.60 = 89,186.70/x
  3. Step 3: Cross multiply
    160,783.55x = 221,894.60 × 89,186.70
  4. Step 4: Simplify right side
    160,783.55x = 19,790,046,675.89
  5. Step 5: Solve for x
    x = 19,790,046,675.89/160,783.55
  6. Step 6: Final answer
    x = 123,085.03

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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.