Home / 99,485.95-149,234.76-28,403.12

Finding the Fourth Proportional to 99,485.95, 149,234.76 and 28,403.12

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Solution

The fourth proportional to 99,485.95, 149,234.76 and 28,403.12 is: 42,606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,485.95 : 149,234.76 = 28,403.12 : x
  2. Step 2: Convert to fraction form
    99,485.95/149,234.76 = 28,403.12/x
  3. Step 3: Cross multiply
    99,485.95x = 149,234.76 × 28,403.12
  4. Step 4: Simplify right side
    99,485.95x = 4,238,731,908.26
  5. Step 5: Solve for x
    x = 4,238,731,908.26/99,485.95
  6. Step 6: Final answer
    x = 42,606.34

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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.