Home / 154,658.32-213,424.92-90,123.45

Finding the Fourth Proportional to 154,658.32, 213,424.92 and 90,123.45

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Solution

The fourth proportional to 154,658.32, 213,424.92 and 90,123.45 is: 124,368.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,658.32 : 213,424.92 = 90,123.45 : x
  2. Step 2: Convert to fraction form
    154,658.32/213,424.92 = 90,123.45/x
  3. Step 3: Cross multiply
    154,658.32x = 213,424.92 × 90,123.45
  4. Step 4: Simplify right side
    154,658.32x = 19,234,590,106.37
  5. Step 5: Solve for x
    x = 19,234,590,106.37/154,658.32
  6. Step 6: Final answer
    x = 124,368.29

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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.