Home / 120,755.34-166,639.13-72,384.60

Finding the Fourth Proportional to 120,755.34, 166,639.13 and 72,384.60

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Solution

The fourth proportional to 120,755.34, 166,639.13 and 72,384.60 is: 99,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,755.34 : 166,639.13 = 72,384.60 : x
  2. Step 2: Convert to fraction form
    120,755.34/166,639.13 = 72,384.60/x
  3. Step 3: Cross multiply
    120,755.34x = 166,639.13 × 72,384.60
  4. Step 4: Simplify right side
    120,755.34x = 12,062,105,755.24
  5. Step 5: Solve for x
    x = 12,062,105,755.24/120,755.34
  6. Step 6: Final answer
    x = 99,888.80

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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.