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Finding the Fourth Proportional to 93,307.80, 140,307.30 and 78,101.40

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Solution

The fourth proportional to 93,307.80, 140,307.30 and 78,101.40 is: 117,441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,307.80 : 140,307.30 = 78,101.40 : x
  2. Step 2: Convert to fraction form
    93,307.80/140,307.30 = 78,101.40/x
  3. Step 3: Cross multiply
    93,307.80x = 140,307.30 × 78,101.40
  4. Step 4: Simplify right side
    93,307.80x = 10,958,196,560.22
  5. Step 5: Solve for x
    x = 10,958,196,560.22/93,307.80
  6. Step 6: Final answer
    x = 117,441.38

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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.