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Finding the Fourth Proportional to 121,178.52, 181,739.52 and 46,271.16

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Solution

The fourth proportional to 121,178.52, 181,739.52 and 46,271.16 is: 69,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,178.52 : 181,739.52 = 46,271.16 : x
  2. Step 2: Convert to fraction form
    121,178.52/181,739.52 = 46,271.16/x
  3. Step 3: Cross multiply
    121,178.52x = 181,739.52 × 46,271.16
  4. Step 4: Simplify right side
    121,178.52x = 8,409,298,408.24
  5. Step 5: Solve for x
    x = 8,409,298,408.24/121,178.52
  6. Step 6: Final answer
    x = 69,395.95

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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.