Home / 100,123.21-138,160.65-59,828.95

Finding the Fourth Proportional to 100,123.21, 138,160.65 and 59,828.95

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Solution

The fourth proportional to 100,123.21, 138,160.65 and 59,828.95 is: 82,558.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,123.21 : 138,160.65 = 59,828.95 : x
  2. Step 2: Convert to fraction form
    100,123.21/138,160.65 = 59,828.95/x
  3. Step 3: Cross multiply
    100,123.21x = 138,160.65 × 59,828.95
  4. Step 4: Simplify right side
    100,123.21x = 8,266,006,620.82
  5. Step 5: Solve for x
    x = 8,266,006,620.82/100,123.21
  6. Step 6: Final answer
    x = 82,558.35

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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.