Home / 105,726.18-145,904.14-57,976.68

Finding the Fourth Proportional to 105,726.18, 145,904.14 and 57,976.68

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Solution

The fourth proportional to 105,726.18, 145,904.14 and 57,976.68 is: 80,008.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,726.18 : 145,904.14 = 57,976.68 : x
  2. Step 2: Convert to fraction form
    105,726.18/145,904.14 = 57,976.68/x
  3. Step 3: Cross multiply
    105,726.18x = 145,904.14 × 57,976.68
  4. Step 4: Simplify right side
    105,726.18x = 8,459,037,635.46
  5. Step 5: Solve for x
    x = 8,459,037,635.46/105,726.18
  6. Step 6: Final answer
    x = 80,008.92

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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.