Home / 145,742.16-201,138.53-85,309.14

Finding the Fourth Proportional to 145,742.16, 201,138.53 and 85,309.14

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Solution

The fourth proportional to 145,742.16, 201,138.53 and 85,309.14 is: 117,735.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,742.16 : 201,138.53 = 85,309.14 : x
  2. Step 2: Convert to fraction form
    145,742.16/201,138.53 = 85,309.14/x
  3. Step 3: Cross multiply
    145,742.16x = 201,138.53 × 85,309.14
  4. Step 4: Simplify right side
    145,742.16x = 17,158,954,588.62
  5. Step 5: Solve for x
    x = 17,158,954,588.62/145,742.16
  6. Step 6: Final answer
    x = 117,735.01

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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.