Home / 130,918.07-180,665.34-74,325.80

Finding the Fourth Proportional to 130,918.07, 180,665.34 and 74,325.80

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Solution

The fourth proportional to 130,918.07, 180,665.34 and 74,325.80 is: 102,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,918.07 : 180,665.34 = 74,325.80 : x
  2. Step 2: Convert to fraction form
    130,918.07/180,665.34 = 74,325.80/x
  3. Step 3: Cross multiply
    130,918.07x = 180,665.34 × 74,325.80
  4. Step 4: Simplify right side
    130,918.07x = 13,428,096,100.71
  5. Step 5: Solve for x
    x = 13,428,096,100.71/130,918.07
  6. Step 6: Final answer
    x = 102,568.70

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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.