Home / 142,660.47-213,990.19-42,820.23

Finding the Fourth Proportional to 142,660.47, 213,990.19 and 42,820.23

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Solution

The fourth proportional to 142,660.47, 213,990.19 and 42,820.23 is: 64,230.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,660.47 : 213,990.19 = 42,820.23 : x
  2. Step 2: Convert to fraction form
    142,660.47/213,990.19 = 42,820.23/x
  3. Step 3: Cross multiply
    142,660.47x = 213,990.19 × 42,820.23
  4. Step 4: Simplify right side
    142,660.47x = 9,163,109,153.54
  5. Step 5: Solve for x
    x = 9,163,109,153.54/142,660.47
  6. Step 6: Final answer
    x = 64,230.19

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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.