Home / 158,659.02-218,968.85-90,660.40

Finding the Fourth Proportional to 158,659.02, 218,968.85 and 90,660.40

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Solution

The fourth proportional to 158,659.02, 218,968.85 and 90,660.40 is: 125,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,659.02 : 218,968.85 = 90,660.40 : x
  2. Step 2: Convert to fraction form
    158,659.02/218,968.85 = 90,660.40/x
  3. Step 3: Cross multiply
    158,659.02x = 218,968.85 × 90,660.40
  4. Step 4: Simplify right side
    158,659.02x = 19,851,803,528.54
  5. Step 5: Solve for x
    x = 19,851,803,528.54/158,659.02
  6. Step 6: Final answer
    x = 125,122.44

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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.