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Finding the Fourth Proportional to 210,166.86, 315,237.48 and 68,009.10

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Solution

The fourth proportional to 210,166.86, 315,237.48 and 68,009.10 is: 102,009.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,166.86 : 315,237.48 = 68,009.10 : x
  2. Step 2: Convert to fraction form
    210,166.86/315,237.48 = 68,009.10/x
  3. Step 3: Cross multiply
    210,166.86x = 315,237.48 × 68,009.10
  4. Step 4: Simplify right side
    210,166.86x = 21,439,017,301.07
  5. Step 5: Solve for x
    x = 21,439,017,301.07/210,166.86
  6. Step 6: Final answer
    x = 102,009.50

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1.5x scale

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.