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Finding the Fourth Proportional to 99,810.30, 149,715.45 and 93,200.70

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Solution

The fourth proportional to 99,810.30, 149,715.45 and 93,200.70 is: 139,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,810.30 : 149,715.45 = 93,200.70 : x
  2. Step 2: Convert to fraction form
    99,810.30/149,715.45 = 93,200.70/x
  3. Step 3: Cross multiply
    99,810.30x = 149,715.45 × 93,200.70
  4. Step 4: Simplify right side
    99,810.30x = 13,953,584,740.82
  5. Step 5: Solve for x
    x = 13,953,584,740.82/99,810.30
  6. Step 6: Final answer
    x = 139,801.05

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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.