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Finding the Fourth Proportional to 210,054.60, 315,101.52 and 83,664.36

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Solution

The fourth proportional to 210,054.60, 315,101.52 and 83,664.36 is: 125,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,054.60 : 315,101.52 = 83,664.36 : x
  2. Step 2: Convert to fraction form
    210,054.60/315,101.52 = 83,664.36/x
  3. Step 3: Cross multiply
    210,054.60x = 315,101.52 × 83,664.36
  4. Step 4: Simplify right side
    210,054.60x = 26,362,767,005.83
  5. Step 5: Solve for x
    x = 26,362,767,005.83/210,054.60
  6. Step 6: Final answer
    x = 125,504.35

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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.