Home / 142,803.02-197,065.14-79,140.26

Finding the Fourth Proportional to 142,803.02, 197,065.14 and 79,140.26

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Solution

The fourth proportional to 142,803.02, 197,065.14 and 79,140.26 is: 109,211.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,803.02 : 197,065.14 = 79,140.26 : x
  2. Step 2: Convert to fraction form
    142,803.02/197,065.14 = 79,140.26/x
  3. Step 3: Cross multiply
    142,803.02x = 197,065.14 × 79,140.26
  4. Step 4: Simplify right side
    142,803.02x = 15,595,786,416.54
  5. Step 5: Solve for x
    x = 15,595,786,416.54/142,803.02
  6. Step 6: Final answer
    x = 109,211.88

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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.