Home / 105,180.16-145,142.96-57,432.80

Finding the Fourth Proportional to 105,180.16, 145,142.96 and 57,432.80

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Solution

The fourth proportional to 105,180.16, 145,142.96 and 57,432.80 is: 79,254.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,180.16 : 145,142.96 = 57,432.80 : x
  2. Step 2: Convert to fraction form
    105,180.16/145,142.96 = 57,432.80/x
  3. Step 3: Cross multiply
    105,180.16x = 145,142.96 × 57,432.80
  4. Step 4: Simplify right side
    105,180.16x = 8,335,966,593.09
  5. Step 5: Solve for x
    x = 8,335,966,593.09/105,180.16
  6. Step 6: Final answer
    x = 79,254.17

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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.