Home / 112,455.68-155,203.20-64,693.76

Finding the Fourth Proportional to 112,455.68, 155,203.20 and 64,693.76

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Solution

The fourth proportional to 112,455.68, 155,203.20 and 64,693.76 is: 89,285.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,455.68 : 155,203.20 = 64,693.76 : x
  2. Step 2: Convert to fraction form
    112,455.68/155,203.20 = 64,693.76/x
  3. Step 3: Cross multiply
    112,455.68x = 155,203.20 × 64,693.76
  4. Step 4: Simplify right side
    112,455.68x = 10,040,678,572.03
  5. Step 5: Solve for x
    x = 10,040,678,572.03/112,455.68
  6. Step 6: Final answer
    x = 89,285.65

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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.