Home / 122,840.45-169,612.20-120,878.67

Finding the Fourth Proportional to 122,840.45, 169,612.20 and 120,878.67

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Solution

The fourth proportional to 122,840.45, 169,612.20 and 120,878.67 is: 166,903.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,840.45 : 169,612.20 = 120,878.67 : x
  2. Step 2: Convert to fraction form
    122,840.45/169,612.20 = 120,878.67/x
  3. Step 3: Cross multiply
    122,840.45x = 169,612.20 × 120,878.67
  4. Step 4: Simplify right side
    122,840.45x = 20,502,496,547.38
  5. Step 5: Solve for x
    x = 20,502,496,547.38/122,840.45
  6. Step 6: Final answer
    x = 166,903.47

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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.