Home / 148,914.40-205,455.52-85,240.32

Finding the Fourth Proportional to 148,914.40, 205,455.52 and 85,240.32

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Solution

The fourth proportional to 148,914.40, 205,455.52 and 85,240.32 is: 117,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,914.40 : 205,455.52 = 85,240.32 : x
  2. Step 2: Convert to fraction form
    148,914.40/205,455.52 = 85,240.32/x
  3. Step 3: Cross multiply
    148,914.40x = 205,455.52 × 85,240.32
  4. Step 4: Simplify right side
    148,914.40x = 17,513,094,270.57
  5. Step 5: Solve for x
    x = 17,513,094,270.57/148,914.40
  6. Step 6: Final answer
    x = 117,605.11

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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.