Home / 155,975.55-215,246.40-84,355.57

Finding the Fourth Proportional to 155,975.55, 215,246.40 and 84,355.57

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Solution

The fourth proportional to 155,975.55, 215,246.40 and 84,355.57 is: 116,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,975.55 : 215,246.40 = 84,355.57 : x
  2. Step 2: Convert to fraction form
    155,975.55/215,246.40 = 84,355.57/x
  3. Step 3: Cross multiply
    155,975.55x = 215,246.40 × 84,355.57
  4. Step 4: Simplify right side
    155,975.55x = 18,157,232,809.72
  5. Step 5: Solve for x
    x = 18,157,232,809.72/155,975.55
  6. Step 6: Final answer
    x = 116,410.76

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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.