Home / 122,945.10-184,417.65-81,392.10

Finding the Fourth Proportional to 122,945.10, 184,417.65 and 81,392.10

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Solution

The fourth proportional to 122,945.10, 184,417.65 and 81,392.10 is: 122,088.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,945.10 : 184,417.65 = 81,392.10 : x
  2. Step 2: Convert to fraction form
    122,945.10/184,417.65 = 81,392.10/x
  3. Step 3: Cross multiply
    122,945.10x = 184,417.65 × 81,392.10
  4. Step 4: Simplify right side
    122,945.10x = 15,010,139,810.57
  5. Step 5: Solve for x
    x = 15,010,139,810.57/122,945.10
  6. Step 6: Final answer
    x = 122,088.15

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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.