Home / 445,688.36-668,579.40-130,146.15

Finding the Fourth Proportional to 445,688.36, 668,579.40 and 130,146.15

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Solution

The fourth proportional to 445,688.36, 668,579.40 and 130,146.15 is: 195,232.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,688.36 : 668,579.40 = 130,146.15 : x
  2. Step 2: Convert to fraction form
    445,688.36/668,579.40 = 130,146.15/x
  3. Step 3: Cross multiply
    445,688.36x = 668,579.40 × 130,146.15
  4. Step 4: Simplify right side
    445,688.36x = 87,013,034,879.31
  5. Step 5: Solve for x
    x = 87,013,034,879.31/445,688.36
  6. Step 6: Final answer
    x = 195,232.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.