Home / 99,328.65-137,076.21-54,009.69

Finding the Fourth Proportional to 99,328.65, 137,076.21 and 54,009.69

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Solution

The fourth proportional to 99,328.65, 137,076.21 and 54,009.69 is: 74,534.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,328.65 : 137,076.21 = 54,009.69 : x
  2. Step 2: Convert to fraction form
    99,328.65/137,076.21 = 54,009.69/x
  3. Step 3: Cross multiply
    99,328.65x = 137,076.21 × 54,009.69
  4. Step 4: Simplify right side
    99,328.65x = 7,403,443,608.47
  5. Step 5: Solve for x
    x = 7,403,443,608.47/99,328.65
  6. Step 6: Final answer
    x = 74,534.83

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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.