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Finding the Fourth Proportional to 152,790.60, 210,845.46 and 84,810.60

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Solution

The fourth proportional to 152,790.60, 210,845.46 and 84,810.60 is: 117,035.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,790.60 : 210,845.46 = 84,810.60 : x
  2. Step 2: Convert to fraction form
    152,790.60/210,845.46 = 84,810.60/x
  3. Step 3: Cross multiply
    152,790.60x = 210,845.46 × 84,810.60
  4. Step 4: Simplify right side
    152,790.60x = 17,881,929,969.88
  5. Step 5: Solve for x
    x = 17,881,929,969.88/152,790.60
  6. Step 6: Final answer
    x = 117,035.54

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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.