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Finding the Fourth Proportional to 172,364.70, 258,547.05 and 74,060.70

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Solution

The fourth proportional to 172,364.70, 258,547.05 and 74,060.70 is: 111,091.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,364.70 : 258,547.05 = 74,060.70 : x
  2. Step 2: Convert to fraction form
    172,364.70/258,547.05 = 74,060.70/x
  3. Step 3: Cross multiply
    172,364.70x = 258,547.05 × 74,060.70
  4. Step 4: Simplify right side
    172,364.70x = 19,148,175,505.94
  5. Step 5: Solve for x
    x = 19,148,175,505.94/172,364.70
  6. Step 6: Final answer
    x = 111,091.05

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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.