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Finding the Fourth Proportional to 158,885.70, 219,262.86 and 87,267.12

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Solution

The fourth proportional to 158,885.70, 219,262.86 and 87,267.12 is: 120,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,885.70 : 219,262.86 = 87,267.12 : x
  2. Step 2: Convert to fraction form
    158,885.70/219,262.86 = 87,267.12/x
  3. Step 3: Cross multiply
    158,885.70x = 219,262.86 × 87,267.12
  4. Step 4: Simplify right side
    158,885.70x = 19,134,438,315.16
  5. Step 5: Solve for x
    x = 19,134,438,315.16/158,885.70
  6. Step 6: Final answer
    x = 120,428.95

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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.