Home / 99,705.94-137,594.30-57,272.67

Finding the Fourth Proportional to 99,705.94, 137,594.30 and 57,272.67

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Solution

The fourth proportional to 99,705.94, 137,594.30 and 57,272.67 is: 79,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,705.94 : 137,594.30 = 57,272.67 : x
  2. Step 2: Convert to fraction form
    99,705.94/137,594.30 = 57,272.67/x
  3. Step 3: Cross multiply
    99,705.94x = 137,594.30 × 57,272.67
  4. Step 4: Simplify right side
    99,705.94x = 7,880,392,651.42
  5. Step 5: Solve for x
    x = 7,880,392,651.42/99,705.94
  6. Step 6: Final answer
    x = 79,036.34

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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.