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Finding the Fourth Proportional to 172,030.60, 258,045.90 and 45,670.60

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Solution

The fourth proportional to 172,030.60, 258,045.90 and 45,670.60 is: 68,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,030.60 : 258,045.90 = 45,670.60 : x
  2. Step 2: Convert to fraction form
    172,030.60/258,045.90 = 45,670.60/x
  3. Step 3: Cross multiply
    172,030.60x = 258,045.90 × 45,670.60
  4. Step 4: Simplify right side
    172,030.60x = 11,785,111,080.54
  5. Step 5: Solve for x
    x = 11,785,111,080.54/172,030.60
  6. Step 6: Final answer
    x = 68,505.90

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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.