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Finding the Fourth Proportional to 104,759.80, 144,203.40 and 91,307.68

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Solution

The fourth proportional to 104,759.80, 144,203.40 and 91,307.68 is: 125,686.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,759.80 : 144,203.40 = 91,307.68 : x
  2. Step 2: Convert to fraction form
    104,759.80/144,203.40 = 91,307.68/x
  3. Step 3: Cross multiply
    104,759.80x = 144,203.40 × 91,307.68
  4. Step 4: Simplify right side
    104,759.80x = 13,166,877,902.11
  5. Step 5: Solve for x
    x = 13,166,877,902.11/104,759.80
  6. Step 6: Final answer
    x = 125,686.36

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1.5x scale

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.