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Finding the Fourth Proportional to 148,407.48, 204,798.72 and 80,421.48

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Solution

The fourth proportional to 148,407.48, 204,798.72 and 80,421.48 is: 110,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,407.48 : 204,798.72 = 80,421.48 : x
  2. Step 2: Convert to fraction form
    148,407.48/204,798.72 = 80,421.48/x
  3. Step 3: Cross multiply
    148,407.48x = 204,798.72 × 80,421.48
  4. Step 4: Simplify right side
    148,407.48x = 16,470,216,164.51
  5. Step 5: Solve for x
    x = 16,470,216,164.51/148,407.48
  6. Step 6: Final answer
    x = 110,979.69

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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.