Home / 145,216.08-217,976.76-128,682

Finding the Fourth Proportional to 145,216.08, 217,976.76 and 128,682

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Solution

The fourth proportional to 145,216.08, 217,976.76 and 128,682 is: 193,158.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,216.08 : 217,976.76 = 128,682 : x
  2. Step 2: Convert to fraction form
    145,216.08/217,976.76 = 128,682/x
  3. Step 3: Cross multiply
    145,216.08x = 217,976.76 × 128,682
  4. Step 4: Simplify right side
    145,216.08x = 28,049,685,430.32
  5. Step 5: Solve for x
    x = 28,049,685,430.32/145,216.08
  6. Step 6: Final answer
    x = 193,158.26

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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.