Home / 105,168.38-145,133.07-57,422.32

Finding the Fourth Proportional to 105,168.38, 145,133.07 and 57,422.32

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Solution

The fourth proportional to 105,168.38, 145,133.07 and 57,422.32 is: 79,243.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,168.38 : 145,133.07 = 57,422.32 : x
  2. Step 2: Convert to fraction form
    105,168.38/145,133.07 = 57,422.32/x
  3. Step 3: Cross multiply
    105,168.38x = 145,133.07 × 57,422.32
  4. Step 4: Simplify right side
    105,168.38x = 8,333,877,009.96
  5. Step 5: Solve for x
    x = 8,333,877,009.96/105,168.38
  6. Step 6: Final answer
    x = 79,243.19

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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.