Home / 145,018.02-200,114.64-80,490.54

Finding the Fourth Proportional to 145,018.02, 200,114.64 and 80,490.54

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Solution

The fourth proportional to 145,018.02, 200,114.64 and 80,490.54 is: 111,071.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,018.02 : 200,114.64 = 80,490.54 : x
  2. Step 2: Convert to fraction form
    145,018.02/200,114.64 = 80,490.54/x
  3. Step 3: Cross multiply
    145,018.02x = 200,114.64 × 80,490.54
  4. Step 4: Simplify right side
    145,018.02x = 16,107,335,435.51
  5. Step 5: Solve for x
    x = 16,107,335,435.51/145,018.02
  6. Step 6: Final answer
    x = 111,071.27

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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.