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Finding the Fourth Proportional to 103,011.55, 142,097.90 and 59,985.97

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Solution

The fourth proportional to 103,011.55, 142,097.90 and 59,985.97 is: 82,746.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,011.55 : 142,097.90 = 59,985.97 : x
  2. Step 2: Convert to fraction form
    103,011.55/142,097.90 = 59,985.97/x
  3. Step 3: Cross multiply
    103,011.55x = 142,097.90 × 59,985.97
  4. Step 4: Simplify right side
    103,011.55x = 8,523,879,711.29
  5. Step 5: Solve for x
    x = 8,523,879,711.29/103,011.55
  6. Step 6: Final answer
    x = 82,746.84

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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.