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Finding the Fourth Proportional to 145,126.69, 217,634.11 and 56,368.51

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Solution

The fourth proportional to 145,126.69, 217,634.11 and 56,368.51 is: 84,531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,126.69 : 217,634.11 = 56,368.51 : x
  2. Step 2: Convert to fraction form
    145,126.69/217,634.11 = 56,368.51/x
  3. Step 3: Cross multiply
    145,126.69x = 217,634.11 × 56,368.51
  4. Step 4: Simplify right side
    145,126.69x = 12,267,709,820.87
  5. Step 5: Solve for x
    x = 12,267,709,820.87/145,126.69
  6. Step 6: Final answer
    x = 84,531.04

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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.