Home / 105,176.16-145,137.44-57,428.80

Finding the Fourth Proportional to 105,176.16, 145,137.44 and 57,428.80

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Solution

The fourth proportional to 105,176.16, 145,137.44 and 57,428.80 is: 79,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,176.16 : 145,137.44 = 57,428.80 : x
  2. Step 2: Convert to fraction form
    105,176.16/145,137.44 = 57,428.80/x
  3. Step 3: Cross multiply
    105,176.16x = 145,137.44 × 57,428.80
  4. Step 4: Simplify right side
    105,176.16x = 8,335,069,014.27
  5. Step 5: Solve for x
    x = 8,335,069,014.27/105,176.16
  6. Step 6: Final answer
    x = 79,248.65

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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.