Home / 142,658.47-213,987.19-42,818.23

Finding the Fourth Proportional to 142,658.47, 213,987.19 and 42,818.23

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Solution

The fourth proportional to 142,658.47, 213,987.19 and 42,818.23 is: 64,227.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,658.47 : 213,987.19 = 42,818.23 : x
  2. Step 2: Convert to fraction form
    142,658.47/213,987.19 = 42,818.23/x
  3. Step 3: Cross multiply
    142,658.47x = 213,987.19 × 42,818.23
  4. Step 4: Simplify right side
    142,658.47x = 9,162,552,718.47
  5. Step 5: Solve for x
    x = 9,162,552,718.47/142,658.47
  6. Step 6: Final answer
    x = 64,227.19

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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.