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Finding the Fourth Proportional to 99,645.60, 149,266.80 and 62,090.40

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Solution

The fourth proportional to 99,645.60, 149,266.80 and 62,090.40 is: 93,009.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.60 : 149,266.80 = 62,090.40 : x
  2. Step 2: Convert to fraction form
    99,645.60/149,266.80 = 62,090.40/x
  3. Step 3: Cross multiply
    99,645.60x = 149,266.80 × 62,090.40
  4. Step 4: Simplify right side
    99,645.60x = 9,268,035,318.72
  5. Step 5: Solve for x
    x = 9,268,035,318.72/99,645.60
  6. Step 6: Final answer
    x = 93,009.98

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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.