Home / 98,915.42-148,521.35-85,629.39

Finding the Fourth Proportional to 98,915.42, 148,521.35 and 85,629.39

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Solution

The fourth proportional to 98,915.42, 148,521.35 and 85,629.39 is: 128,572.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,915.42 : 148,521.35 = 85,629.39 : x
  2. Step 2: Convert to fraction form
    98,915.42/148,521.35 = 85,629.39/x
  3. Step 3: Cross multiply
    98,915.42x = 148,521.35 × 85,629.39
  4. Step 4: Simplify right side
    98,915.42x = 12,717,792,816.55
  5. Step 5: Solve for x
    x = 12,717,792,816.55/98,915.42
  6. Step 6: Final answer
    x = 128,572.41

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1.5x scale

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.