Home / 100,915.14-139,266.36-55,596.18

Finding the Fourth Proportional to 100,915.14, 139,266.36 and 55,596.18

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Solution

The fourth proportional to 100,915.14, 139,266.36 and 55,596.18 is: 76,724.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,915.14 : 139,266.36 = 55,596.18 : x
  2. Step 2: Convert to fraction form
    100,915.14/139,266.36 = 55,596.18/x
  3. Step 3: Cross multiply
    100,915.14x = 139,266.36 × 55,596.18
  4. Step 4: Simplify right side
    100,915.14x = 7,742,677,618.50
  5. Step 5: Solve for x
    x = 7,742,677,618.50/100,915.14
  6. Step 6: Final answer
    x = 76,724.64

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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.