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Finding the Fourth Proportional to 172,854.81, 238,555.30 and 104,889.00

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Solution

The fourth proportional to 172,854.81, 238,555.30 and 104,889.00 is: 144,756.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,854.81 : 238,555.30 = 104,889.00 : x
  2. Step 2: Convert to fraction form
    172,854.81/238,555.30 = 104,889.00/x
  3. Step 3: Cross multiply
    172,854.81x = 238,555.30 × 104,889.00
  4. Step 4: Simplify right side
    172,854.81x = 25,021,827,314.79
  5. Step 5: Solve for x
    x = 25,021,827,314.79/172,854.81
  6. Step 6: Final answer
    x = 144,756.33

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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.