Home / 145,009.04-217,311.26-78,305.54

Finding the Fourth Proportional to 145,009.04, 217,311.26 and 78,305.54

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Solution

The fourth proportional to 145,009.04, 217,311.26 and 78,305.54 is: 117,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,009.04 : 217,311.26 = 78,305.54 : x
  2. Step 2: Convert to fraction form
    145,009.04/217,311.26 = 78,305.54/x
  3. Step 3: Cross multiply
    145,009.04x = 217,311.26 × 78,305.54
  4. Step 4: Simplify right side
    145,009.04x = 17,016,674,084.30
  5. Step 5: Solve for x
    x = 17,016,674,084.30/145,009.04
  6. Step 6: Final answer
    x = 117,349.06

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1.5x scale

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.