Home / 84,821.60-127,232.40-70,047.20

Finding the Fourth Proportional to 84,821.60, 127,232.40 and 70,047.20

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Solution

The fourth proportional to 84,821.60, 127,232.40 and 70,047.20 is: 105,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,821.60 : 127,232.40 = 70,047.20 : x
  2. Step 2: Convert to fraction form
    84,821.60/127,232.40 = 70,047.20/x
  3. Step 3: Cross multiply
    84,821.60x = 127,232.40 × 70,047.20
  4. Step 4: Simplify right side
    84,821.60x = 8,912,273,369.28
  5. Step 5: Solve for x
    x = 8,912,273,369.28/84,821.60
  6. Step 6: Final answer
    x = 105,070.80

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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.