Home / 105,146.80-145,104.84-57,402.16

Finding the Fourth Proportional to 105,146.80, 145,104.84 and 57,402.16

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Solution

The fourth proportional to 105,146.80, 145,104.84 and 57,402.16 is: 79,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,146.80 : 145,104.84 = 57,402.16 : x
  2. Step 2: Convert to fraction form
    105,146.80/145,104.84 = 57,402.16/x
  3. Step 3: Cross multiply
    105,146.80x = 145,104.84 × 57,402.16
  4. Step 4: Simplify right side
    105,146.80x = 8,329,331,242.45
  5. Step 5: Solve for x
    x = 8,329,331,242.45/105,146.80
  6. Step 6: Final answer
    x = 79,216.21

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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.