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Finding the Fourth Proportional to 104,783.68, 144,653.28 and 71,424.64

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Solution

The fourth proportional to 104,783.68, 144,653.28 and 71,424.64 is: 98,601.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,783.68 : 144,653.28 = 71,424.64 : x
  2. Step 2: Convert to fraction form
    104,783.68/144,653.28 = 71,424.64/x
  3. Step 3: Cross multiply
    104,783.68x = 144,653.28 × 71,424.64
  4. Step 4: Simplify right side
    104,783.68x = 10,331,808,448.82
  5. Step 5: Solve for x
    x = 10,331,808,448.82/104,783.68
  6. Step 6: Final answer
    x = 98,601.31

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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.