Home / 103,631.06-155,449.22-77,501.68

Finding the Fourth Proportional to 103,631.06, 155,449.22 and 77,501.68

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Solution

The fourth proportional to 103,631.06, 155,449.22 and 77,501.68 is: 116,254.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.06 : 155,449.22 = 77,501.68 : x
  2. Step 2: Convert to fraction form
    103,631.06/155,449.22 = 77,501.68/x
  3. Step 3: Cross multiply
    103,631.06x = 155,449.22 × 77,501.68
  4. Step 4: Simplify right side
    103,631.06x = 12,047,575,704.69
  5. Step 5: Solve for x
    x = 12,047,575,704.69/103,631.06
  6. Step 6: Final answer
    x = 116,254.49

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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.