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Finding the Fourth Proportional to 114,784.70, 172,220.78 and 103,652.87

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Solution

The fourth proportional to 114,784.70, 172,220.78 and 103,652.87 is: 155,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,784.70 : 172,220.78 = 103,652.87 : x
  2. Step 2: Convert to fraction form
    114,784.70/172,220.78 = 103,652.87/x
  3. Step 3: Cross multiply
    114,784.70x = 172,220.78 × 103,652.87
  4. Step 4: Simplify right side
    114,784.70x = 17,851,177,518.67
  5. Step 5: Solve for x
    x = 17,851,177,518.67/114,784.70
  6. Step 6: Final answer
    x = 155,518.80

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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.