Home / 130,872.96-180,605.54-74,285.28

Finding the Fourth Proportional to 130,872.96, 180,605.54 and 74,285.28

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Solution

The fourth proportional to 130,872.96, 180,605.54 and 74,285.28 is: 102,514.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,872.96 : 180,605.54 = 74,285.28 : x
  2. Step 2: Convert to fraction form
    130,872.96/180,605.54 = 74,285.28/x
  3. Step 3: Cross multiply
    130,872.96x = 180,605.54 × 74,285.28
  4. Step 4: Simplify right side
    130,872.96x = 13,416,333,108.45
  5. Step 5: Solve for x
    x = 13,416,333,108.45/130,872.96
  6. Step 6: Final answer
    x = 102,514.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.