Home / 142,428.10-196,518.67-85,057.02

Finding the Fourth Proportional to 142,428.10, 196,518.67 and 85,057.02

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Solution

The fourth proportional to 142,428.10, 196,518.67 and 85,057.02 is: 117,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,428.10 : 196,518.67 = 85,057.02 : x
  2. Step 2: Convert to fraction form
    142,428.10/196,518.67 = 85,057.02/x
  3. Step 3: Cross multiply
    142,428.10x = 196,518.67 × 85,057.02
  4. Step 4: Simplify right side
    142,428.10x = 16,715,292,444.56
  5. Step 5: Solve for x
    x = 16,715,292,444.56/142,428.10
  6. Step 6: Final answer
    x = 117,359.51

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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.