Home / 112,021.80-168,032.70-72,623.40

Finding the Fourth Proportional to 112,021.80, 168,032.70 and 72,623.40

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Solution

The fourth proportional to 112,021.80, 168,032.70 and 72,623.40 is: 108,935.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,021.80 : 168,032.70 = 72,623.40 : x
  2. Step 2: Convert to fraction form
    112,021.80/168,032.70 = 72,623.40/x
  3. Step 3: Cross multiply
    112,021.80x = 168,032.70 × 72,623.40
  4. Step 4: Simplify right side
    112,021.80x = 12,203,105,985.18
  5. Step 5: Solve for x
    x = 12,203,105,985.18/112,021.80
  6. Step 6: Final answer
    x = 108,935.10

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1.5x scale

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.