Home / 145,769.68-201,288.88-112,111.76

Finding the Fourth Proportional to 145,769.68, 201,288.88 and 112,111.76

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Solution

The fourth proportional to 145,769.68, 201,288.88 and 112,111.76 is: 154,811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,769.68 : 201,288.88 = 112,111.76 : x
  2. Step 2: Convert to fraction form
    145,769.68/201,288.88 = 112,111.76/x
  3. Step 3: Cross multiply
    145,769.68x = 201,288.88 × 112,111.76
  4. Step 4: Simplify right side
    145,769.68x = 22,566,850,605.23
  5. Step 5: Solve for x
    x = 22,566,850,605.23/145,769.68
  6. Step 6: Final answer
    x = 154,811.69

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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.