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Finding the Fourth Proportional to 99,810.60, 149,715.90 and 49,898.40

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Solution

The fourth proportional to 99,810.60, 149,715.90 and 49,898.40 is: 74,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,810.60 : 149,715.90 = 49,898.40 : x
  2. Step 2: Convert to fraction form
    99,810.60/149,715.90 = 49,898.40/x
  3. Step 3: Cross multiply
    99,810.60x = 149,715.90 × 49,898.40
  4. Step 4: Simplify right side
    99,810.60x = 7,470,583,864.56
  5. Step 5: Solve for x
    x = 7,470,583,864.56/99,810.60
  6. Step 6: Final answer
    x = 74,847.60

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1.5x scale

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.