Home / 142,148.40-213,221.58-57,888.78

Finding the Fourth Proportional to 142,148.40, 213,221.58 and 57,888.78

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Solution

The fourth proportional to 142,148.40, 213,221.58 and 57,888.78 is: 86,832.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,148.40 : 213,221.58 = 57,888.78 : x
  2. Step 2: Convert to fraction form
    142,148.40/213,221.58 = 57,888.78/x
  3. Step 3: Cross multiply
    142,148.40x = 213,221.58 × 57,888.78
  4. Step 4: Simplify right side
    142,148.40x = 12,343,137,135.87
  5. Step 5: Solve for x
    x = 12,343,137,135.87/142,148.40
  6. Step 6: Final answer
    x = 86,832.75

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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.