Home / 130,731.76-196,018.58-58,671.60

Finding the Fourth Proportional to 130,731.76, 196,018.58 and 58,671.60

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Solution

The fourth proportional to 130,731.76, 196,018.58 and 58,671.60 is: 87,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,731.76 : 196,018.58 = 58,671.60 : x
  2. Step 2: Convert to fraction form
    130,731.76/196,018.58 = 58,671.60/x
  3. Step 3: Cross multiply
    130,731.76x = 196,018.58 × 58,671.60
  4. Step 4: Simplify right side
    130,731.76x = 11,500,723,718.33
  5. Step 5: Solve for x
    x = 11,500,723,718.33/130,731.76
  6. Step 6: Final answer
    x = 87,971.92

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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.