Home / 123,491.32-170,421.24-75,717.16

Finding the Fourth Proportional to 123,491.32, 170,421.24 and 75,717.16

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Solution

The fourth proportional to 123,491.32, 170,421.24 and 75,717.16 is: 104,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.32 : 170,421.24 = 75,717.16 : x
  2. Step 2: Convert to fraction form
    123,491.32/170,421.24 = 75,717.16/x
  3. Step 3: Cross multiply
    123,491.32x = 170,421.24 × 75,717.16
  4. Step 4: Simplify right side
    123,491.32x = 12,903,812,296.48
  5. Step 5: Solve for x
    x = 12,903,812,296.48/123,491.32
  6. Step 6: Final answer
    x = 104,491.65

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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.