Home / 130,196.81-179,673-76,484.09

Finding the Fourth Proportional to 130,196.81, 179,673 and 76,484.09

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Solution

The fourth proportional to 130,196.81, 179,673 and 76,484.09 is: 105,548.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,196.81 : 179,673 = 76,484.09 : x
  2. Step 2: Convert to fraction form
    130,196.81/179,673 = 76,484.09/x
  3. Step 3: Cross multiply
    130,196.81x = 179,673 × 76,484.09
  4. Step 4: Simplify right side
    130,196.81x = 13,742,125,004.21
  5. Step 5: Solve for x
    x = 13,742,125,004.21/130,196.81
  6. Step 6: Final answer
    x = 105,548.87

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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.