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Finding the Fourth Proportional to 145,852.52, 201,276.48 and 78,784.52

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Solution

The fourth proportional to 145,852.52, 201,276.48 and 78,784.52 is: 108,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,852.52 : 201,276.48 = 78,784.52 : x
  2. Step 2: Convert to fraction form
    145,852.52/201,276.48 = 78,784.52/x
  3. Step 3: Cross multiply
    145,852.52x = 201,276.48 × 78,784.52
  4. Step 4: Simplify right side
    145,852.52x = 15,857,470,864.09
  5. Step 5: Solve for x
    x = 15,857,470,864.09/145,852.52
  6. Step 6: Final answer
    x = 108,722.64

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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.