Home / 127,772.20-191,312.70-100,124.20

Finding the Fourth Proportional to 127,772.20, 191,312.70 and 100,124.20

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Solution

The fourth proportional to 127,772.20, 191,312.70 and 100,124.20 is: 149,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,772.20 : 191,312.70 = 100,124.20 : x
  2. Step 2: Convert to fraction form
    127,772.20/191,312.70 = 100,124.20/x
  3. Step 3: Cross multiply
    127,772.20x = 191,312.70 × 100,124.20
  4. Step 4: Simplify right side
    127,772.20x = 19,155,031,037.34
  5. Step 5: Solve for x
    x = 19,155,031,037.34/127,772.20
  6. Step 6: Final answer
    x = 149,915.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.