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Finding the Fourth Proportional to 103,312.94, 142,554.94 and 60,865.70

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Solution

The fourth proportional to 103,312.94, 142,554.94 and 60,865.70 is: 83,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,312.94 : 142,554.94 = 60,865.70 : x
  2. Step 2: Convert to fraction form
    103,312.94/142,554.94 = 60,865.70/x
  3. Step 3: Cross multiply
    103,312.94x = 142,554.94 × 60,865.70
  4. Step 4: Simplify right side
    103,312.94x = 8,676,705,346.62
  5. Step 5: Solve for x
    x = 8,676,705,346.62/103,312.94
  6. Step 6: Final answer
    x = 83,984.70

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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.