Home / 163,537.70-245,306.55-128,108.30

Finding the Fourth Proportional to 163,537.70, 245,306.55 and 128,108.30

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Solution

The fourth proportional to 163,537.70, 245,306.55 and 128,108.30 is: 192,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,537.70 : 245,306.55 = 128,108.30 : x
  2. Step 2: Convert to fraction form
    163,537.70/245,306.55 = 128,108.30/x
  3. Step 3: Cross multiply
    163,537.70x = 245,306.55 × 128,108.30
  4. Step 4: Simplify right side
    163,537.70x = 31,425,805,099.37
  5. Step 5: Solve for x
    x = 31,425,805,099.37/163,537.70
  6. Step 6: Final answer
    x = 192,162.45

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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.