Home / 102,298.36-153,473.10-81,317.56

Finding the Fourth Proportional to 102,298.36, 153,473.10 and 81,317.56

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Solution

The fourth proportional to 102,298.36, 153,473.10 and 81,317.56 is: 121,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,298.36 : 153,473.10 = 81,317.56 : x
  2. Step 2: Convert to fraction form
    102,298.36/153,473.10 = 81,317.56/x
  3. Step 3: Cross multiply
    102,298.36x = 153,473.10 × 81,317.56
  4. Step 4: Simplify right side
    102,298.36x = 12,480,058,017.64
  5. Step 5: Solve for x
    x = 12,480,058,017.64/102,298.36
  6. Step 6: Final answer
    x = 121,996.66

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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.