Home / 145,919.63-201,369.08-78,851.63

Finding the Fourth Proportional to 145,919.63, 201,369.08 and 78,851.63

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Solution

The fourth proportional to 145,919.63, 201,369.08 and 78,851.63 is: 108,815.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,919.63 : 201,369.08 = 78,851.63 : x
  2. Step 2: Convert to fraction form
    145,919.63/201,369.08 = 78,851.63/x
  3. Step 3: Cross multiply
    145,919.63x = 201,369.08 × 78,851.63
  4. Step 4: Simplify right side
    145,919.63x = 15,878,279,379.88
  5. Step 5: Solve for x
    x = 15,878,279,379.88/145,919.63
  6. Step 6: Final answer
    x = 108,815.24

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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.