Home / 420,683.68-631,027.32-105,141.04

Finding the Fourth Proportional to 420,683.68, 631,027.32 and 105,141.04

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Solution

The fourth proportional to 420,683.68, 631,027.32 and 105,141.04 is: 157,712.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,683.68 : 631,027.32 = 105,141.04 : x
  2. Step 2: Convert to fraction form
    420,683.68/631,027.32 = 105,141.04/x
  3. Step 3: Cross multiply
    420,683.68x = 631,027.32 × 105,141.04
  4. Step 4: Simplify right side
    420,683.68x = 66,346,868,693.21
  5. Step 5: Solve for x
    x = 66,346,868,693.21/420,683.68
  6. Step 6: Final answer
    x = 157,712.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.