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Finding the Fourth Proportional to 103,815.93, 143,265.93 and 56,069.28

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Solution

The fourth proportional to 103,815.93, 143,265.93 and 56,069.28 is: 77,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,815.93 : 143,265.93 = 56,069.28 : x
  2. Step 2: Convert to fraction form
    103,815.93/143,265.93 = 56,069.28/x
  3. Step 3: Cross multiply
    103,815.93x = 143,265.93 × 56,069.28
  4. Step 4: Simplify right side
    103,815.93x = 8,032,817,543.63
  5. Step 5: Solve for x
    x = 8,032,817,543.63/103,815.93
  6. Step 6: Final answer
    x = 77,375.58

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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.