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Finding the Fourth Proportional to 103,178.61, 142,383.52 and 62,877.67

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Solution

The fourth proportional to 103,178.61, 142,383.52 and 62,877.67 is: 86,769.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,178.61 : 142,383.52 = 62,877.67 : x
  2. Step 2: Convert to fraction form
    103,178.61/142,383.52 = 62,877.67/x
  3. Step 3: Cross multiply
    103,178.61x = 142,383.52 × 62,877.67
  4. Step 4: Simplify right side
    103,178.61x = 8,952,743,984.00
  5. Step 5: Solve for x
    x = 8,952,743,984.00/103,178.61
  6. Step 6: Final answer
    x = 86,769.38

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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.