Home / 100,211.23-138,225.04-64,446.49

Finding the Fourth Proportional to 100,211.23, 138,225.04 and 64,446.49

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Solution

The fourth proportional to 100,211.23, 138,225.04 and 64,446.49 is: 88,893.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,211.23 : 138,225.04 = 64,446.49 : x
  2. Step 2: Convert to fraction form
    100,211.23/138,225.04 = 64,446.49/x
  3. Step 3: Cross multiply
    100,211.23x = 138,225.04 × 64,446.49
  4. Step 4: Simplify right side
    100,211.23x = 8,908,118,658.11
  5. Step 5: Solve for x
    x = 8,908,118,658.11/100,211.23
  6. Step 6: Final answer
    x = 88,893.42

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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.