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Finding the Fourth Proportional to 130,201.66, 179,679.70 and 76,488.94

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Solution

The fourth proportional to 130,201.66, 179,679.70 and 76,488.94 is: 105,555.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,201.66 : 179,679.70 = 76,488.94 : x
  2. Step 2: Convert to fraction form
    130,201.66/179,679.70 = 76,488.94/x
  3. Step 3: Cross multiply
    130,201.66x = 179,679.70 × 76,488.94
  4. Step 4: Simplify right side
    130,201.66x = 13,743,509,792.52
  5. Step 5: Solve for x
    x = 13,743,509,792.52/130,201.66
  6. Step 6: Final answer
    x = 105,555.57

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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.