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Finding the Fourth Proportional to 99,802.70, 149,485.35 and 53,000.90

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Solution

The fourth proportional to 99,802.70, 149,485.35 and 53,000.90 is: 79,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,802.70 : 149,485.35 = 53,000.90 : x
  2. Step 2: Convert to fraction form
    99,802.70/149,485.35 = 53,000.90/x
  3. Step 3: Cross multiply
    99,802.70x = 149,485.35 × 53,000.90
  4. Step 4: Simplify right side
    99,802.70x = 7,922,858,086.82
  5. Step 5: Solve for x
    x = 7,922,858,086.82/99,802.70
  6. Step 6: Final answer
    x = 79,385.21

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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.