Home / 190,145.16-262,428-109,557.12

Finding the Fourth Proportional to 190,145.16, 262,428 and 109,557.12

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Solution

The fourth proportional to 190,145.16, 262,428 and 109,557.12 is: 151,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,145.16 : 262,428 = 109,557.12 : x
  2. Step 2: Convert to fraction form
    190,145.16/262,428 = 109,557.12/x
  3. Step 3: Cross multiply
    190,145.16x = 262,428 × 109,557.12
  4. Step 4: Simplify right side
    190,145.16x = 28,750,855,887.36
  5. Step 5: Solve for x
    x = 28,750,855,887.36/190,145.16
  6. Step 6: Final answer
    x = 151,204.77

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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.