Home / 142,018.79-213,040.04-40,817.19

Finding the Fourth Proportional to 142,018.79, 213,040.04 and 40,817.19

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Solution

The fourth proportional to 142,018.79, 213,040.04 and 40,817.19 is: 61,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,018.79 : 213,040.04 = 40,817.19 : x
  2. Step 2: Convert to fraction form
    142,018.79/213,040.04 = 40,817.19/x
  3. Step 3: Cross multiply
    142,018.79x = 213,040.04 × 40,817.19
  4. Step 4: Simplify right side
    142,018.79x = 8,695,695,586.20
  5. Step 5: Solve for x
    x = 8,695,695,586.20/142,018.79
  6. Step 6: Final answer
    x = 61,229.19

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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.