Home / 105,572.14-145,689.57-57,827.20

Finding the Fourth Proportional to 105,572.14, 145,689.57 and 57,827.20

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Solution

The fourth proportional to 105,572.14, 145,689.57 and 57,827.20 is: 79,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,572.14 : 145,689.57 = 57,827.20 : x
  2. Step 2: Convert to fraction form
    105,572.14/145,689.57 = 57,827.20/x
  3. Step 3: Cross multiply
    105,572.14x = 145,689.57 × 57,827.20
  4. Step 4: Simplify right side
    105,572.14x = 8,424,819,173.86
  5. Step 5: Solve for x
    x = 8,424,819,173.86/105,572.14
  6. Step 6: Final answer
    x = 79,801.54

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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.