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Finding the Fourth Proportional to 172,290.02, 258,435.03 and 53,970.57

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Solution

The fourth proportional to 172,290.02, 258,435.03 and 53,970.57 is: 80,955.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,290.02 : 258,435.03 = 53,970.57 : x
  2. Step 2: Convert to fraction form
    172,290.02/258,435.03 = 53,970.57/x
  3. Step 3: Cross multiply
    172,290.02x = 258,435.03 × 53,970.57
  4. Step 4: Simplify right side
    172,290.02x = 13,947,885,877.07
  5. Step 5: Solve for x
    x = 13,947,885,877.07/172,290.02
  6. Step 6: Final answer
    x = 80,955.86

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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.