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Finding the Fourth Proportional to 172,034.40, 258,051.60 and 118,890.30

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Solution

The fourth proportional to 172,034.40, 258,051.60 and 118,890.30 is: 178,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,034.40 : 258,051.60 = 118,890.30 : x
  2. Step 2: Convert to fraction form
    172,034.40/258,051.60 = 118,890.30/x
  3. Step 3: Cross multiply
    172,034.40x = 258,051.60 × 118,890.30
  4. Step 4: Simplify right side
    172,034.40x = 30,679,832,139.48
  5. Step 5: Solve for x
    x = 30,679,832,139.48/172,034.40
  6. Step 6: Final answer
    x = 178,335.45

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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.