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Finding the Fourth Proportional to 158,884.68, 219,263.60 and 87,267.72

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Solution

The fourth proportional to 158,884.68, 219,263.60 and 87,267.72 is: 120,430.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,884.68 : 219,263.60 = 87,267.72 : x
  2. Step 2: Convert to fraction form
    158,884.68/219,263.60 = 87,267.72/x
  3. Step 3: Cross multiply
    158,884.68x = 219,263.60 × 87,267.72
  4. Step 4: Simplify right side
    158,884.68x = 19,134,634,450.99
  5. Step 5: Solve for x
    x = 19,134,634,450.99/158,884.68
  6. Step 6: Final answer
    x = 120,430.96

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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.