Home / 130,369.80-195,554.70-90,280.20

Finding the Fourth Proportional to 130,369.80, 195,554.70 and 90,280.20

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Solution

The fourth proportional to 130,369.80, 195,554.70 and 90,280.20 is: 135,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,369.80 : 195,554.70 = 90,280.20 : x
  2. Step 2: Convert to fraction form
    130,369.80/195,554.70 = 90,280.20/x
  3. Step 3: Cross multiply
    130,369.80x = 195,554.70 × 90,280.20
  4. Step 4: Simplify right side
    130,369.80x = 17,654,717,426.94
  5. Step 5: Solve for x
    x = 17,654,717,426.94/130,369.80
  6. Step 6: Final answer
    x = 135,420.30

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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.