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Finding the Fourth Proportional to 112,688.40, 168,786.97 and 56,430.39

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Solution

The fourth proportional to 112,688.40, 168,786.97 and 56,430.39 is: 84,522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.40 : 168,786.97 = 56,430.39 : x
  2. Step 2: Convert to fraction form
    112,688.40/168,786.97 = 56,430.39/x
  3. Step 3: Cross multiply
    112,688.40x = 168,786.97 × 56,430.39
  4. Step 4: Simplify right side
    112,688.40x = 9,524,714,402.94
  5. Step 5: Solve for x
    x = 9,524,714,402.94/112,688.40
  6. Step 6: Final answer
    x = 84,522.58

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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.