Home / 101,212.24-139,674-55,890.16

Finding the Fourth Proportional to 101,212.24, 139,674 and 55,890.16

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Solution

The fourth proportional to 101,212.24, 139,674 and 55,890.16 is: 77,129.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,212.24 : 139,674 = 55,890.16 : x
  2. Step 2: Convert to fraction form
    101,212.24/139,674 = 55,890.16/x
  3. Step 3: Cross multiply
    101,212.24x = 139,674 × 55,890.16
  4. Step 4: Simplify right side
    101,212.24x = 7,806,402,207.84
  5. Step 5: Solve for x
    x = 7,806,402,207.84/101,212.24
  6. Step 6: Final answer
    x = 77,129.03

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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.