Home / 90,855.15-136,298.29-30,877.28

Finding the Fourth Proportional to 90,855.15, 136,298.29 and 30,877.28

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Solution

The fourth proportional to 90,855.15, 136,298.29 and 30,877.28 is: 46,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,855.15 : 136,298.29 = 30,877.28 : x
  2. Step 2: Convert to fraction form
    90,855.15/136,298.29 = 30,877.28/x
  3. Step 3: Cross multiply
    90,855.15x = 136,298.29 × 30,877.28
  4. Step 4: Simplify right side
    90,855.15x = 4,208,520,463.85
  5. Step 5: Solve for x
    x = 4,208,520,463.85/90,855.15
  6. Step 6: Final answer
    x = 46,321.21

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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.