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Finding the Fourth Proportional to 130,261.81, 179,764.51 and 72,900.68

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Solution

The fourth proportional to 130,261.81, 179,764.51 and 72,900.68 is: 100,604.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,261.81 : 179,764.51 = 72,900.68 : x
  2. Step 2: Convert to fraction form
    130,261.81/179,764.51 = 72,900.68/x
  3. Step 3: Cross multiply
    130,261.81x = 179,764.51 × 72,900.68
  4. Step 4: Simplify right side
    130,261.81x = 13,104,955,018.87
  5. Step 5: Solve for x
    x = 13,104,955,018.87/130,261.81
  6. Step 6: Final answer
    x = 100,604.74

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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.