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Finding the Fourth Proportional to 99,130.73, 136,800.78 and 53,808.80

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Solution

The fourth proportional to 99,130.73, 136,800.78 and 53,808.80 is: 74,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,130.73 : 136,800.78 = 53,808.80 : x
  2. Step 2: Convert to fraction form
    99,130.73/136,800.78 = 53,808.80/x
  3. Step 3: Cross multiply
    99,130.73x = 136,800.78 × 53,808.80
  4. Step 4: Simplify right side
    99,130.73x = 7,361,085,810.86
  5. Step 5: Solve for x
    x = 7,361,085,810.86/99,130.73
  6. Step 6: Final answer
    x = 74,256.35

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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.