Home / 145,783.12-201,197.09-81,258.25

Finding the Fourth Proportional to 145,783.12, 201,197.09 and 81,258.25

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Solution

The fourth proportional to 145,783.12, 201,197.09 and 81,258.25 is: 112,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,783.12 : 201,197.09 = 81,258.25 : x
  2. Step 2: Convert to fraction form
    145,783.12/201,197.09 = 81,258.25/x
  3. Step 3: Cross multiply
    145,783.12x = 201,197.09 × 81,258.25
  4. Step 4: Simplify right side
    145,783.12x = 16,348,922,026.22
  5. Step 5: Solve for x
    x = 16,348,922,026.22/145,783.12
  6. Step 6: Final answer
    x = 112,145.51

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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.