Home / 190,482.12-285,854.40-85,418.64

Finding the Fourth Proportional to 190,482.12, 285,854.40 and 85,418.64

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Solution

The fourth proportional to 190,482.12, 285,854.40 and 85,418.64 is: 128,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,482.12 : 285,854.40 = 85,418.64 : x
  2. Step 2: Convert to fraction form
    190,482.12/285,854.40 = 85,418.64/x
  3. Step 3: Cross multiply
    190,482.12x = 285,854.40 × 85,418.64
  4. Step 4: Simplify right side
    190,482.12x = 24,417,294,086.02
  5. Step 5: Solve for x
    x = 24,417,294,086.02/190,482.12
  6. Step 6: Final answer
    x = 128,186.80

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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.