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Finding the Fourth Proportional to 145,237.98, 217,857.12 and 45,398.70

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Solution

The fourth proportional to 145,237.98, 217,857.12 and 45,398.70 is: 68,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,237.98 : 217,857.12 = 45,398.70 : x
  2. Step 2: Convert to fraction form
    145,237.98/217,857.12 = 45,398.70/x
  3. Step 3: Cross multiply
    145,237.98x = 217,857.12 × 45,398.70
  4. Step 4: Simplify right side
    145,237.98x = 9,890,430,033.74
  5. Step 5: Solve for x
    x = 9,890,430,033.74/145,237.98
  6. Step 6: Final answer
    x = 68,098.10

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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.