Home / 100,579.60-150,869.40-89,693.20

Finding the Fourth Proportional to 100,579.60, 150,869.40 and 89,693.20

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Solution

The fourth proportional to 100,579.60, 150,869.40 and 89,693.20 is: 134,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,579.60 : 150,869.40 = 89,693.20 : x
  2. Step 2: Convert to fraction form
    100,579.60/150,869.40 = 89,693.20/x
  3. Step 3: Cross multiply
    100,579.60x = 150,869.40 × 89,693.20
  4. Step 4: Simplify right side
    100,579.60x = 13,531,959,268.08
  5. Step 5: Solve for x
    x = 13,531,959,268.08/100,579.60
  6. Step 6: Final answer
    x = 134,539.80

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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.