Home / 142,051.20-213,076.80-79,713.60

Finding the Fourth Proportional to 142,051.20, 213,076.80 and 79,713.60

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Solution

The fourth proportional to 142,051.20, 213,076.80 and 79,713.60 is: 119,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,051.20 : 213,076.80 = 79,713.60 : x
  2. Step 2: Convert to fraction form
    142,051.20/213,076.80 = 79,713.60/x
  3. Step 3: Cross multiply
    142,051.20x = 213,076.80 × 79,713.60
  4. Step 4: Simplify right side
    142,051.20x = 16,985,118,804.48
  5. Step 5: Solve for x
    x = 16,985,118,804.48/142,051.20
  6. Step 6: Final answer
    x = 119,570.40

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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.