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Finding the Fourth Proportional to 215,303, 297,118.14 and 121,095

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Solution

The fourth proportional to 215,303, 297,118.14 and 121,095 is: 167,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,303 : 297,118.14 = 121,095 : x
  2. Step 2: Convert to fraction form
    215,303/297,118.14 = 121,095/x
  3. Step 3: Cross multiply
    215,303x = 297,118.14 × 121,095
  4. Step 4: Simplify right side
    215,303x = 35,979,521,163.30
  5. Step 5: Solve for x
    x = 35,979,521,163.30/215,303
  6. Step 6: Final answer
    x = 167,111.10

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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.