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Finding the Fourth Proportional to 99,707.40, 149,509.80 and 29,577.60

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Solution

The fourth proportional to 99,707.40, 149,509.80 and 29,577.60 is: 44,351.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,707.40 : 149,509.80 = 29,577.60 : x
  2. Step 2: Convert to fraction form
    99,707.40/149,509.80 = 29,577.60/x
  3. Step 3: Cross multiply
    99,707.40x = 149,509.80 × 29,577.60
  4. Step 4: Simplify right side
    99,707.40x = 4,422,141,060.48
  5. Step 5: Solve for x
    x = 4,422,141,060.48/99,707.40
  6. Step 6: Final answer
    x = 44,351.18

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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.