Home / 158,621.10-218,911.16-87,015.07

Finding the Fourth Proportional to 158,621.10, 218,911.16 and 87,015.07

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Solution

The fourth proportional to 158,621.10, 218,911.16 and 87,015.07 is: 120,088.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,621.10 : 218,911.16 = 87,015.07 : x
  2. Step 2: Convert to fraction form
    158,621.10/218,911.16 = 87,015.07/x
  3. Step 3: Cross multiply
    158,621.10x = 218,911.16 × 87,015.07
  4. Step 4: Simplify right side
    158,621.10x = 19,048,569,911.18
  5. Step 5: Solve for x
    x = 19,048,569,911.18/158,621.10
  6. Step 6: Final answer
    x = 120,088.50

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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.