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Finding the Fourth Proportional to 158,995.60, 219,403.32 and 87,374.08

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Solution

The fourth proportional to 158,995.60, 219,403.32 and 87,374.08 is: 120,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,995.60 : 219,403.32 = 87,374.08 : x
  2. Step 2: Convert to fraction form
    158,995.60/219,403.32 = 87,374.08/x
  3. Step 3: Cross multiply
    158,995.60x = 219,403.32 × 87,374.08
  4. Step 4: Simplify right side
    158,995.60x = 19,170,163,233.95
  5. Step 5: Solve for x
    x = 19,170,163,233.95/158,995.60
  6. Step 6: Final answer
    x = 120,570.40

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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.