Home / 99,815.80-149,723.70-98,503.60

Finding the Fourth Proportional to 99,815.80, 149,723.70 and 98,503.60

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Solution

The fourth proportional to 99,815.80, 149,723.70 and 98,503.60 is: 147,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815.80 : 149,723.70 = 98,503.60 : x
  2. Step 2: Convert to fraction form
    99,815.80/149,723.70 = 98,503.60/x
  3. Step 3: Cross multiply
    99,815.80x = 149,723.70 × 98,503.60
  4. Step 4: Simplify right side
    99,815.80x = 14,748,323,455.32
  5. Step 5: Solve for x
    x = 14,748,323,455.32/99,815.80
  6. Step 6: Final answer
    x = 147,755.40

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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.