Home / 142,275.16-213,243.18-66,271.72

Finding the Fourth Proportional to 142,275.16, 213,243.18 and 66,271.72

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Solution

The fourth proportional to 142,275.16, 213,243.18 and 66,271.72 is: 99,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,275.16 : 213,243.18 = 66,271.72 : x
  2. Step 2: Convert to fraction form
    142,275.16/213,243.18 = 66,271.72/x
  3. Step 3: Cross multiply
    142,275.16x = 213,243.18 × 66,271.72
  4. Step 4: Simplify right side
    142,275.16x = 14,131,992,316.87
  5. Step 5: Solve for x
    x = 14,131,992,316.87/142,275.16
  6. Step 6: Final answer
    x = 99,328.60

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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.