Home / 158,730.89-219,047.94-87,112.07

Finding the Fourth Proportional to 158,730.89, 219,047.94 and 87,112.07

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Solution

The fourth proportional to 158,730.89, 219,047.94 and 87,112.07 is: 120,214.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,730.89 : 219,047.94 = 87,112.07 : x
  2. Step 2: Convert to fraction form
    158,730.89/219,047.94 = 87,112.07/x
  3. Step 3: Cross multiply
    158,730.89x = 219,047.94 × 87,112.07
  4. Step 4: Simplify right side
    158,730.89x = 19,081,719,482.64
  5. Step 5: Solve for x
    x = 19,081,719,482.64/158,730.89
  6. Step 6: Final answer
    x = 120,214.28

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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.