Home / 103,318.10-154,977.15-85,822.10

Finding the Fourth Proportional to 103,318.10, 154,977.15 and 85,822.10

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Solution

The fourth proportional to 103,318.10, 154,977.15 and 85,822.10 is: 128,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,318.10 : 154,977.15 = 85,822.10 : x
  2. Step 2: Convert to fraction form
    103,318.10/154,977.15 = 85,822.10/x
  3. Step 3: Cross multiply
    103,318.10x = 154,977.15 × 85,822.10
  4. Step 4: Simplify right side
    103,318.10x = 13,300,464,465.02
  5. Step 5: Solve for x
    x = 13,300,464,465.02/103,318.10
  6. Step 6: Final answer
    x = 128,733.15

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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.