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Finding the Fourth Proportional to 163,510.80, 245,136.60 and 89,638.80

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Solution

The fourth proportional to 163,510.80, 245,136.60 and 89,638.80 is: 134,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,510.80 : 245,136.60 = 89,638.80 : x
  2. Step 2: Convert to fraction form
    163,510.80/245,136.60 = 89,638.80/x
  3. Step 3: Cross multiply
    163,510.80x = 245,136.60 × 89,638.80
  4. Step 4: Simplify right side
    163,510.80x = 21,973,750,660.08
  5. Step 5: Solve for x
    x = 21,973,750,660.08/163,510.80
  6. Step 6: Final answer
    x = 134,387.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.