Home / 103,699.28-155,580.51-53,815.16

Finding the Fourth Proportional to 103,699.28, 155,580.51 and 53,815.16

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Solution

The fourth proportional to 103,699.28, 155,580.51 and 53,815.16 is: 80,739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.28 : 155,580.51 = 53,815.16 : x
  2. Step 2: Convert to fraction form
    103,699.28/155,580.51 = 53,815.16/x
  3. Step 3: Cross multiply
    103,699.28x = 155,580.51 × 53,815.16
  4. Step 4: Simplify right side
    103,699.28x = 8,372,590,038.53
  5. Step 5: Solve for x
    x = 8,372,590,038.53/103,699.28
  6. Step 6: Final answer
    x = 80,739.13

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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.