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Finding the Fourth Proportional to 158,903.67, 219,288.38 and 87,285.32

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Solution

The fourth proportional to 158,903.67, 219,288.38 and 87,285.32 is: 120,454.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,903.67 : 219,288.38 = 87,285.32 : x
  2. Step 2: Convert to fraction form
    158,903.67/219,288.38 = 87,285.32/x
  3. Step 3: Cross multiply
    158,903.67x = 219,288.38 × 87,285.32
  4. Step 4: Simplify right side
    158,903.67x = 19,140,656,420.58
  5. Step 5: Solve for x
    x = 19,140,656,420.58/158,903.67
  6. Step 6: Final answer
    x = 120,454.46

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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.