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Finding the Fourth Proportional to 128,042.73, 176,710.73 and 70,692.30

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Solution

The fourth proportional to 128,042.73, 176,710.73 and 70,692.30 is: 97,561.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042.73 : 176,710.73 = 70,692.30 : x
  2. Step 2: Convert to fraction form
    128,042.73/176,710.73 = 70,692.30/x
  3. Step 3: Cross multiply
    128,042.73x = 176,710.73 × 70,692.30
  4. Step 4: Simplify right side
    128,042.73x = 12,492,087,584.92
  5. Step 5: Solve for x
    x = 12,492,087,584.92/128,042.73
  6. Step 6: Final answer
    x = 97,561.87

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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.