Home / 430,569.93-645,887.70-131,076.12

Finding the Fourth Proportional to 430,569.93, 645,887.70 and 131,076.12

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Solution

The fourth proportional to 430,569.93, 645,887.70 and 131,076.12 is: 196,624.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,569.93 : 645,887.70 = 131,076.12 : x
  2. Step 2: Convert to fraction form
    430,569.93/645,887.70 = 131,076.12/x
  3. Step 3: Cross multiply
    430,569.93x = 645,887.70 × 131,076.12
  4. Step 4: Simplify right side
    430,569.93x = 84,660,453,671.72
  5. Step 5: Solve for x
    x = 84,660,453,671.72/430,569.93
  6. Step 6: Final answer
    x = 196,624.17

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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.