Home / 130,774.84-196,359.08-74,678.28

Finding the Fourth Proportional to 130,774.84, 196,359.08 and 74,678.28

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Solution

The fourth proportional to 130,774.84, 196,359.08 and 74,678.28 is: 112,129.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,774.84 : 196,359.08 = 74,678.28 : x
  2. Step 2: Convert to fraction form
    130,774.84/196,359.08 = 74,678.28/x
  3. Step 3: Cross multiply
    130,774.84x = 196,359.08 × 74,678.28
  4. Step 4: Simplify right side
    130,774.84x = 14,663,758,356.78
  5. Step 5: Solve for x
    x = 14,663,758,356.78/130,774.84
  6. Step 6: Final answer
    x = 112,129.81

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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.