Home / 102,762.18-141,809.67-57,438.90

Finding the Fourth Proportional to 102,762.18, 141,809.67 and 57,438.90

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Solution

The fourth proportional to 102,762.18, 141,809.67 and 57,438.90 is: 79,264.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,762.18 : 141,809.67 = 57,438.90 : x
  2. Step 2: Convert to fraction form
    102,762.18/141,809.67 = 57,438.90/x
  3. Step 3: Cross multiply
    102,762.18x = 141,809.67 × 57,438.90
  4. Step 4: Simplify right side
    102,762.18x = 8,145,391,454.16
  5. Step 5: Solve for x
    x = 8,145,391,454.16/102,762.18
  6. Step 6: Final answer
    x = 79,264.49

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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.