Home / 159,345.90-219,898.80-87,727.50

Finding the Fourth Proportional to 159,345.90, 219,898.80 and 87,727.50

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Solution

The fourth proportional to 159,345.90, 219,898.80 and 87,727.50 is: 121,064.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,345.90 : 219,898.80 = 87,727.50 : x
  2. Step 2: Convert to fraction form
    159,345.90/219,898.80 = 87,727.50/x
  3. Step 3: Cross multiply
    159,345.90x = 219,898.80 × 87,727.50
  4. Step 4: Simplify right side
    159,345.90x = 19,291,171,977
  5. Step 5: Solve for x
    x = 19,291,171,977/159,345.90
  6. Step 6: Final answer
    x = 121,064.75

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1.5x scale

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.