Home / 100,925.08-139,276.74-54,984.49

Finding the Fourth Proportional to 100,925.08, 139,276.74 and 54,984.49

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Solution

The fourth proportional to 100,925.08, 139,276.74 and 54,984.49 is: 75,878.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,925.08 : 139,276.74 = 54,984.49 : x
  2. Step 2: Convert to fraction form
    100,925.08/139,276.74 = 54,984.49/x
  3. Step 3: Cross multiply
    100,925.08x = 139,276.74 × 54,984.49
  4. Step 4: Simplify right side
    100,925.08x = 7,658,060,242.84
  5. Step 5: Solve for x
    x = 7,658,060,242.84/100,925.08
  6. Step 6: Final answer
    x = 75,878.67

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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.