Home / 103,150.23-142,357.40-57,828.30

Finding the Fourth Proportional to 103,150.23, 142,357.40 and 57,828.30

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Solution

The fourth proportional to 103,150.23, 142,357.40 and 57,828.30 is: 79,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,150.23 : 142,357.40 = 57,828.30 : x
  2. Step 2: Convert to fraction form
    103,150.23/142,357.40 = 57,828.30/x
  3. Step 3: Cross multiply
    103,150.23x = 142,357.40 × 57,828.30
  4. Step 4: Simplify right side
    103,150.23x = 8,232,286,434.42
  5. Step 5: Solve for x
    x = 8,232,286,434.42/103,150.23
  6. Step 6: Final answer
    x = 79,808.71

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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.