Home / 155,306.12-214,307.64-90,790.44

Finding the Fourth Proportional to 155,306.12, 214,307.64 and 90,790.44

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Solution

The fourth proportional to 155,306.12, 214,307.64 and 90,790.44 is: 125,282.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,306.12 : 214,307.64 = 90,790.44 : x
  2. Step 2: Convert to fraction form
    155,306.12/214,307.64 = 90,790.44/x
  3. Step 3: Cross multiply
    155,306.12x = 214,307.64 × 90,790.44
  4. Step 4: Simplify right side
    155,306.12x = 19,457,084,930.96
  5. Step 5: Solve for x
    x = 19,457,084,930.96/155,306.12
  6. Step 6: Final answer
    x = 125,282.15

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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.