Home / 122,130.49-168,455.92-85,908.77

Finding the Fourth Proportional to 122,130.49, 168,455.92 and 85,908.77

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Solution

The fourth proportional to 122,130.49, 168,455.92 and 85,908.77 is: 118,494.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,130.49 : 168,455.92 = 85,908.77 : x
  2. Step 2: Convert to fraction form
    122,130.49/168,455.92 = 85,908.77/x
  3. Step 3: Cross multiply
    122,130.49x = 168,455.92 × 85,908.77
  4. Step 4: Simplify right side
    122,130.49x = 14,471,840,886.42
  5. Step 5: Solve for x
    x = 14,471,840,886.42/122,130.49
  6. Step 6: Final answer
    x = 118,494.91

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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.