Home / 161,890.80-242,836.20-90,740.40

Finding the Fourth Proportional to 161,890.80, 242,836.20 and 90,740.40

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Solution

The fourth proportional to 161,890.80, 242,836.20 and 90,740.40 is: 136,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,890.80 : 242,836.20 = 90,740.40 : x
  2. Step 2: Convert to fraction form
    161,890.80/242,836.20 = 90,740.40/x
  3. Step 3: Cross multiply
    161,890.80x = 242,836.20 × 90,740.40
  4. Step 4: Simplify right side
    161,890.80x = 22,035,053,922.48
  5. Step 5: Solve for x
    x = 22,035,053,922.48/161,890.80
  6. Step 6: Final answer
    x = 136,110.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.