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Finding the Fourth Proportional to 159,448.50, 220,038.93 and 87,828.30

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Solution

The fourth proportional to 159,448.50, 220,038.93 and 87,828.30 is: 121,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,448.50 : 220,038.93 = 87,828.30 : x
  2. Step 2: Convert to fraction form
    159,448.50/220,038.93 = 87,828.30/x
  3. Step 3: Cross multiply
    159,448.50x = 220,038.93 × 87,828.30
  4. Step 4: Simplify right side
    159,448.50x = 19,325,645,155.72
  5. Step 5: Solve for x
    x = 19,325,645,155.72/159,448.50
  6. Step 6: Final answer
    x = 121,203.05

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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.