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Finding the Fourth Proportional to 128,000.70, 179,385.30 and 128,000.70

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Solution

The fourth proportional to 128,000.70, 179,385.30 and 128,000.70 is: 179,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,000.70 : 179,385.30 = 128,000.70 : x
  2. Step 2: Convert to fraction form
    128,000.70/179,385.30 = 128,000.70/x
  3. Step 3: Cross multiply
    128,000.70x = 179,385.30 × 128,000.70
  4. Step 4: Simplify right side
    128,000.70x = 22,961,443,969.71
  5. Step 5: Solve for x
    x = 22,961,443,969.71/128,000.70
  6. Step 6: Final answer
    x = 179,385.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.