Home / 105,726.13-145,908.71-57,979.49

Finding the Fourth Proportional to 105,726.13, 145,908.71 and 57,979.49

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Solution

The fourth proportional to 105,726.13, 145,908.71 and 57,979.49 is: 80,015.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,726.13 : 145,908.71 = 57,979.49 : x
  2. Step 2: Convert to fraction form
    105,726.13/145,908.71 = 57,979.49/x
  3. Step 3: Cross multiply
    105,726.13x = 145,908.71 × 57,979.49
  4. Step 4: Simplify right side
    105,726.13x = 8,459,712,592.36
  5. Step 5: Solve for x
    x = 8,459,712,592.36/105,726.13
  6. Step 6: Final answer
    x = 80,015.34

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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.