Home / 105,088.79-145,021.33-57,342.94

Finding the Fourth Proportional to 105,088.79, 145,021.33 and 57,342.94

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Solution

The fourth proportional to 105,088.79, 145,021.33 and 57,342.94 is: 79,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,088.79 : 145,021.33 = 57,342.94 : x
  2. Step 2: Convert to fraction form
    105,088.79/145,021.33 = 57,342.94/x
  3. Step 3: Cross multiply
    105,088.79x = 145,021.33 × 57,342.94
  4. Step 4: Simplify right side
    105,088.79x = 8,315,948,919.00
  5. Step 5: Solve for x
    x = 8,315,948,919.00/105,088.79
  6. Step 6: Final answer
    x = 79,132.60

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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.