Home / 109,878.73-151,643.75-66,861.25

Finding the Fourth Proportional to 109,878.73, 151,643.75 and 66,861.25

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Solution

The fourth proportional to 109,878.73, 151,643.75 and 66,861.25 is: 92,275.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,878.73 : 151,643.75 = 66,861.25 : x
  2. Step 2: Convert to fraction form
    109,878.73/151,643.75 = 66,861.25/x
  3. Step 3: Cross multiply
    109,878.73x = 151,643.75 × 66,861.25
  4. Step 4: Simplify right side
    109,878.73x = 10,139,089,966.27
  5. Step 5: Solve for x
    x = 10,139,089,966.27/109,878.73
  6. Step 6: Final answer
    x = 92,275.28

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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.