Home / 142,055.40-213,083.10-53,311.80

Finding the Fourth Proportional to 142,055.40, 213,083.10 and 53,311.80

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Solution

The fourth proportional to 142,055.40, 213,083.10 and 53,311.80 is: 79,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,055.40 : 213,083.10 = 53,311.80 : x
  2. Step 2: Convert to fraction form
    142,055.40/213,083.10 = 53,311.80/x
  3. Step 3: Cross multiply
    142,055.40x = 213,083.10 × 53,311.80
  4. Step 4: Simplify right side
    142,055.40x = 11,359,843,610.58
  5. Step 5: Solve for x
    x = 11,359,843,610.58/142,055.40
  6. Step 6: Final answer
    x = 79,967.70

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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.