Home / 107,213.15-147,889.80-70,915.43

Finding the Fourth Proportional to 107,213.15, 147,889.80 and 70,915.43

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Solution

The fourth proportional to 107,213.15, 147,889.80 and 70,915.43 is: 97,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,213.15 : 147,889.80 = 70,915.43 : x
  2. Step 2: Convert to fraction form
    107,213.15/147,889.80 = 70,915.43/x
  3. Step 3: Cross multiply
    107,213.15x = 147,889.80 × 70,915.43
  4. Step 4: Simplify right side
    107,213.15x = 10,487,669,129.34
  5. Step 5: Solve for x
    x = 10,487,669,129.34/107,213.15
  6. Step 6: Final answer
    x = 97,820.73

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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.