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Finding the Fourth Proportional to 84,813.60, 127,220.40 and 73,538.40

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Solution

The fourth proportional to 84,813.60, 127,220.40 and 73,538.40 is: 110,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,813.60 : 127,220.40 = 73,538.40 : x
  2. Step 2: Convert to fraction form
    84,813.60/127,220.40 = 73,538.40/x
  3. Step 3: Cross multiply
    84,813.60x = 127,220.40 × 73,538.40
  4. Step 4: Simplify right side
    84,813.60x = 9,355,584,663.36
  5. Step 5: Solve for x
    x = 9,355,584,663.36/84,813.60
  6. Step 6: Final answer
    x = 110,307.60

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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.