Home / 155,355.03-214,374.20-87,361.20

Finding the Fourth Proportional to 155,355.03, 214,374.20 and 87,361.20

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Solution

The fourth proportional to 155,355.03, 214,374.20 and 87,361.20 is: 120,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,355.03 : 214,374.20 = 87,361.20 : x
  2. Step 2: Convert to fraction form
    155,355.03/214,374.20 = 87,361.20/x
  3. Step 3: Cross multiply
    155,355.03x = 214,374.20 × 87,361.20
  4. Step 4: Simplify right side
    155,355.03x = 18,727,986,924.23
  5. Step 5: Solve for x
    x = 18,727,986,924.23/155,355.03
  6. Step 6: Final answer
    x = 120,549.60

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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.