Home / 160,729.40-221,811.81-89,116.07

Finding the Fourth Proportional to 160,729.40, 221,811.81 and 89,116.07

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Solution

The fourth proportional to 160,729.40, 221,811.81 and 89,116.07 is: 122,983.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,729.40 : 221,811.81 = 89,116.07 : x
  2. Step 2: Convert to fraction form
    160,729.40/221,811.81 = 89,116.07/x
  3. Step 3: Cross multiply
    160,729.40x = 221,811.81 × 89,116.07
  4. Step 4: Simplify right side
    160,729.40x = 19,766,996,786.79
  5. Step 5: Solve for x
    x = 19,766,996,786.79/160,729.40
  6. Step 6: Final answer
    x = 122,983.08

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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.