Home / 102,730.80-154,139.40-56,017.20

Finding the Fourth Proportional to 102,730.80, 154,139.40 and 56,017.20

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Solution

The fourth proportional to 102,730.80, 154,139.40 and 56,017.20 is: 84,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,730.80 : 154,139.40 = 56,017.20 : x
  2. Step 2: Convert to fraction form
    102,730.80/154,139.40 = 56,017.20/x
  3. Step 3: Cross multiply
    102,730.80x = 154,139.40 × 56,017.20
  4. Step 4: Simplify right side
    102,730.80x = 8,634,457,597.68
  5. Step 5: Solve for x
    x = 8,634,457,597.68/102,730.80
  6. Step 6: Final answer
    x = 84,049.36

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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.