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Finding the Fourth Proportional to 92,842.48, 128,178.48 and 87,528.88

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Solution

The fourth proportional to 92,842.48, 128,178.48 and 87,528.88 is: 120,842.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,842.48 : 128,178.48 = 87,528.88 : x
  2. Step 2: Convert to fraction form
    92,842.48/128,178.48 = 87,528.88/x
  3. Step 3: Cross multiply
    92,842.48x = 128,178.48 × 87,528.88
  4. Step 4: Simplify right side
    92,842.48x = 11,219,318,794.50
  5. Step 5: Solve for x
    x = 11,219,318,794.50/92,842.48
  6. Step 6: Final answer
    x = 120,842.52

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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.