Home / 145,713.64-201,088.19-81,187.15

Finding the Fourth Proportional to 145,713.64, 201,088.19 and 81,187.15

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Solution

The fourth proportional to 145,713.64, 201,088.19 and 81,187.15 is: 112,040.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,713.64 : 201,088.19 = 81,187.15 : x
  2. Step 2: Convert to fraction form
    145,713.64/201,088.19 = 81,187.15/x
  3. Step 3: Cross multiply
    145,713.64x = 201,088.19 × 81,187.15
  4. Step 4: Simplify right side
    145,713.64x = 16,325,776,136.10
  5. Step 5: Solve for x
    x = 16,325,776,136.10/145,713.64
  6. Step 6: Final answer
    x = 112,040.14

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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.