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Finding the Fourth Proportional to 153,100.67, 211,260.46 and 85,108.94

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Solution

The fourth proportional to 153,100.67, 211,260.46 and 85,108.94 is: 117,440.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,100.67 : 211,260.46 = 85,108.94 : x
  2. Step 2: Convert to fraction form
    153,100.67/211,260.46 = 85,108.94/x
  3. Step 3: Cross multiply
    153,100.67x = 211,260.46 × 85,108.94
  4. Step 4: Simplify right side
    153,100.67x = 17,980,152,545.44
  5. Step 5: Solve for x
    x = 17,980,152,545.44/153,100.67
  6. Step 6: Final answer
    x = 117,440.06

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1.5x scale

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.