Home / 129,937.50-179,313.75-70,321.50

Finding the Fourth Proportional to 129,937.50, 179,313.75 and 70,321.50

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Solution

The fourth proportional to 129,937.50, 179,313.75 and 70,321.50 is: 97,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,937.50 : 179,313.75 = 70,321.50 : x
  2. Step 2: Convert to fraction form
    129,937.50/179,313.75 = 70,321.50/x
  3. Step 3: Cross multiply
    129,937.50x = 179,313.75 × 70,321.50
  4. Step 4: Simplify right side
    129,937.50x = 12,609,611,870.63
  5. Step 5: Solve for x
    x = 12,609,611,870.63/129,937.50
  6. Step 6: Final answer
    x = 97,043.67

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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.