Home / 148,899.40-205,490.28-85,235.68

Finding the Fourth Proportional to 148,899.40, 205,490.28 and 85,235.68

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Solution

The fourth proportional to 148,899.40, 205,490.28 and 85,235.68 is: 117,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,899.40 : 205,490.28 = 85,235.68 : x
  2. Step 2: Convert to fraction form
    148,899.40/205,490.28 = 85,235.68/x
  3. Step 3: Cross multiply
    148,899.40x = 205,490.28 × 85,235.68
  4. Step 4: Simplify right side
    148,899.40x = 17,515,103,749.19
  5. Step 5: Solve for x
    x = 17,515,103,749.19/148,899.40
  6. Step 6: Final answer
    x = 117,630.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.