Home / 190,259.55-285,392.16-90,430.02

Finding the Fourth Proportional to 190,259.55, 285,392.16 and 90,430.02

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Solution

The fourth proportional to 190,259.55, 285,392.16 and 90,430.02 is: 135,646.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,259.55 : 285,392.16 = 90,430.02 : x
  2. Step 2: Convert to fraction form
    190,259.55/285,392.16 = 90,430.02/x
  3. Step 3: Cross multiply
    190,259.55x = 285,392.16 × 90,430.02
  4. Step 4: Simplify right side
    190,259.55x = 25,808,018,736.64
  5. Step 5: Solve for x
    x = 25,808,018,736.64/190,259.55
  6. Step 6: Final answer
    x = 135,646.38

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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.