Home / 127,931.70-191,897.55-85,941.30

Finding the Fourth Proportional to 127,931.70, 191,897.55 and 85,941.30

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Solution

The fourth proportional to 127,931.70, 191,897.55 and 85,941.30 is: 128,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,931.70 : 191,897.55 = 85,941.30 : x
  2. Step 2: Convert to fraction form
    127,931.70/191,897.55 = 85,941.30/x
  3. Step 3: Cross multiply
    127,931.70x = 191,897.55 × 85,941.30
  4. Step 4: Simplify right side
    127,931.70x = 16,491,924,913.82
  5. Step 5: Solve for x
    x = 16,491,924,913.82/127,931.70
  6. Step 6: Final answer
    x = 128,911.95

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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.