Home / 130,980.30-196,330.51-74,699.20

Finding the Fourth Proportional to 130,980.30, 196,330.51 and 74,699.20

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Solution

The fourth proportional to 130,980.30, 196,330.51 and 74,699.20 is: 111,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,980.30 : 196,330.51 = 74,699.20 : x
  2. Step 2: Convert to fraction form
    130,980.30/196,330.51 = 74,699.20/x
  3. Step 3: Cross multiply
    130,980.30x = 196,330.51 × 74,699.20
  4. Step 4: Simplify right side
    130,980.30x = 14,665,732,032.59
  5. Step 5: Solve for x
    x = 14,665,732,032.59/130,980.30
  6. Step 6: Final answer
    x = 111,968.99

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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.