Home / 105,069.78-145,008.39-58,507.33

Finding the Fourth Proportional to 105,069.78, 145,008.39 and 58,507.33

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Solution

The fourth proportional to 105,069.78, 145,008.39 and 58,507.33 is: 80,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,069.78 : 145,008.39 = 58,507.33 : x
  2. Step 2: Convert to fraction form
    105,069.78/145,008.39 = 58,507.33/x
  3. Step 3: Cross multiply
    105,069.78x = 145,008.39 × 58,507.33
  4. Step 4: Simplify right side
    105,069.78x = 8,484,053,726.50
  5. Step 5: Solve for x
    x = 8,484,053,726.50/105,069.78
  6. Step 6: Final answer
    x = 80,746.85

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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.