Home / 158,718.91-219,038.42-87,101.50

Finding the Fourth Proportional to 158,718.91, 219,038.42 and 87,101.50

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Solution

The fourth proportional to 158,718.91, 219,038.42 and 87,101.50 is: 120,203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,718.91 : 219,038.42 = 87,101.50 : x
  2. Step 2: Convert to fraction form
    158,718.91/219,038.42 = 87,101.50/x
  3. Step 3: Cross multiply
    158,718.91x = 219,038.42 × 87,101.50
  4. Step 4: Simplify right side
    158,718.91x = 19,078,574,939.63
  5. Step 5: Solve for x
    x = 19,078,574,939.63/158,718.91
  6. Step 6: Final answer
    x = 120,203.54

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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.