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Finding the Fourth Proportional to 84,904.40, 127,492.60 and 67,518.80

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Solution

The fourth proportional to 84,904.40, 127,492.60 and 67,518.80 is: 101,386.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,904.40 : 127,492.60 = 67,518.80 : x
  2. Step 2: Convert to fraction form
    84,904.40/127,492.60 = 67,518.80/x
  3. Step 3: Cross multiply
    84,904.40x = 127,492.60 × 67,518.80
  4. Step 4: Simplify right side
    84,904.40x = 8,608,147,360.88
  5. Step 5: Solve for x
    x = 8,608,147,360.88/84,904.40
  6. Step 6: Final answer
    x = 101,386.35

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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.