Home / 100,100.47-138,124.98-59,805.67

Finding the Fourth Proportional to 100,100.47, 138,124.98 and 59,805.67

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Solution

The fourth proportional to 100,100.47, 138,124.98 and 59,805.67 is: 82,523.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,100.47 : 138,124.98 = 59,805.67 : x
  2. Step 2: Convert to fraction form
    100,100.47/138,124.98 = 59,805.67/x
  3. Step 3: Cross multiply
    100,100.47x = 138,124.98 × 59,805.67
  4. Step 4: Simplify right side
    100,100.47x = 8,260,656,282.01
  5. Step 5: Solve for x
    x = 8,260,656,282.01/100,100.47
  6. Step 6: Final answer
    x = 82,523.66

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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.