Home / 142,329.02-213,485.84-72,206.51

Finding the Fourth Proportional to 142,329.02, 213,485.84 and 72,206.51

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Solution

The fourth proportional to 142,329.02, 213,485.84 and 72,206.51 is: 108,305.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,329.02 : 213,485.84 = 72,206.51 : x
  2. Step 2: Convert to fraction form
    142,329.02/213,485.84 = 72,206.51/x
  3. Step 3: Cross multiply
    142,329.02x = 213,485.84 × 72,206.51
  4. Step 4: Simplify right side
    142,329.02x = 15,415,067,079.79
  5. Step 5: Solve for x
    x = 15,415,067,079.79/142,329.02
  6. Step 6: Final answer
    x = 108,305.86

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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.