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Finding the Fourth Proportional to 181,745.49, 251,018.75 and 121,210.93

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Solution

The fourth proportional to 181,745.49, 251,018.75 and 121,210.93 is: 167,411.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,745.49 : 251,018.75 = 121,210.93 : x
  2. Step 2: Convert to fraction form
    181,745.49/251,018.75 = 121,210.93/x
  3. Step 3: Cross multiply
    181,745.49x = 251,018.75 × 121,210.93
  4. Step 4: Simplify right side
    181,745.49x = 30,426,216,134.94
  5. Step 5: Solve for x
    x = 30,426,216,134.94/181,745.49
  6. Step 6: Final answer
    x = 167,411.12

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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.