Home / 101,828.20-140,549.70-57,130.60

Finding the Fourth Proportional to 101,828.20, 140,549.70 and 57,130.60

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Solution

The fourth proportional to 101,828.20, 140,549.70 and 57,130.60 is: 78,855.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,828.20 : 140,549.70 = 57,130.60 : x
  2. Step 2: Convert to fraction form
    101,828.20/140,549.70 = 57,130.60/x
  3. Step 3: Cross multiply
    101,828.20x = 140,549.70 × 57,130.60
  4. Step 4: Simplify right side
    101,828.20x = 8,029,688,690.82
  5. Step 5: Solve for x
    x = 8,029,688,690.82/101,828.20
  6. Step 6: Final answer
    x = 78,855.26

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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.