Home / 105,172.08-145,136.16-57,424.92

Finding the Fourth Proportional to 105,172.08, 145,136.16 and 57,424.92

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Solution

The fourth proportional to 105,172.08, 145,136.16 and 57,424.92 is: 79,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,172.08 : 145,136.16 = 57,424.92 : x
  2. Step 2: Convert to fraction form
    105,172.08/145,136.16 = 57,424.92/x
  3. Step 3: Cross multiply
    105,172.08x = 145,136.16 × 57,424.92
  4. Step 4: Simplify right side
    105,172.08x = 8,334,432,377.11
  5. Step 5: Solve for x
    x = 8,334,432,377.11/105,172.08
  6. Step 6: Final answer
    x = 79,245.67

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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.