Home / 145,085.76-217,162.08-74,869.44

Finding the Fourth Proportional to 145,085.76, 217,162.08 and 74,869.44

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Solution

The fourth proportional to 145,085.76, 217,162.08 and 74,869.44 is: 112,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,085.76 : 217,162.08 = 74,869.44 : x
  2. Step 2: Convert to fraction form
    145,085.76/217,162.08 = 74,869.44/x
  3. Step 3: Cross multiply
    145,085.76x = 217,162.08 × 74,869.44
  4. Step 4: Simplify right side
    145,085.76x = 16,258,803,318.84
  5. Step 5: Solve for x
    x = 16,258,803,318.84/145,085.76
  6. Step 6: Final answer
    x = 112,063.40

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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.