Home / 102,030.81-140,795.70-56,705.85

Finding the Fourth Proportional to 102,030.81, 140,795.70 and 56,705.85

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Solution

The fourth proportional to 102,030.81, 140,795.70 and 56,705.85 is: 78,250.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,030.81 : 140,795.70 = 56,705.85 : x
  2. Step 2: Convert to fraction form
    102,030.81/140,795.70 = 56,705.85/x
  3. Step 3: Cross multiply
    102,030.81x = 140,795.70 × 56,705.85
  4. Step 4: Simplify right side
    102,030.81x = 7,983,939,844.85
  5. Step 5: Solve for x
    x = 7,983,939,844.85/102,030.81
  6. Step 6: Final answer
    x = 78,250.28

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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.