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Finding the Fourth Proportional to 158,880.99, 219,257.28 and 87,262.50

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Solution

The fourth proportional to 158,880.99, 219,257.28 and 87,262.50 is: 120,423.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,880.99 : 219,257.28 = 87,262.50 : x
  2. Step 2: Convert to fraction form
    158,880.99/219,257.28 = 87,262.50/x
  3. Step 3: Cross multiply
    158,880.99x = 219,257.28 × 87,262.50
  4. Step 4: Simplify right side
    158,880.99x = 19,132,938,396
  5. Step 5: Solve for x
    x = 19,132,938,396/158,880.99
  6. Step 6: Final answer
    x = 120,423.08

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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.