Home / 122,139.10-168,562.32-68,423.38

Finding the Fourth Proportional to 122,139.10, 168,562.32 and 68,423.38

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Solution

The fourth proportional to 122,139.10, 168,562.32 and 68,423.38 is: 94,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,139.10 : 168,562.32 = 68,423.38 : x
  2. Step 2: Convert to fraction form
    122,139.10/168,562.32 = 68,423.38/x
  3. Step 3: Cross multiply
    122,139.10x = 168,562.32 × 68,423.38
  4. Step 4: Simplify right side
    122,139.10x = 11,533,603,675.04
  5. Step 5: Solve for x
    x = 11,533,603,675.04/122,139.10
  6. Step 6: Final answer
    x = 94,430.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.