Home / 145,687.02-218,119.66-77,143.25

Finding the Fourth Proportional to 145,687.02, 218,119.66 and 77,143.25

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Solution

The fourth proportional to 145,687.02, 218,119.66 and 77,143.25 is: 115,497.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,687.02 : 218,119.66 = 77,143.25 : x
  2. Step 2: Convert to fraction form
    145,687.02/218,119.66 = 77,143.25/x
  3. Step 3: Cross multiply
    145,687.02x = 218,119.66 × 77,143.25
  4. Step 4: Simplify right side
    145,687.02x = 16,826,458,370.70
  5. Step 5: Solve for x
    x = 16,826,458,370.70/145,687.02
  6. Step 6: Final answer
    x = 115,497.31

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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.