Home / 105,727.18-145,903.71-57,980.88

Finding the Fourth Proportional to 105,727.18, 145,903.71 and 57,980.88

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Solution

The fourth proportional to 105,727.18, 145,903.71 and 57,980.88 is: 80,013.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,727.18 : 145,903.71 = 57,980.88 : x
  2. Step 2: Convert to fraction form
    105,727.18/145,903.71 = 57,980.88/x
  3. Step 3: Cross multiply
    105,727.18x = 145,903.71 × 57,980.88
  4. Step 4: Simplify right side
    105,727.18x = 8,459,625,501.06
  5. Step 5: Solve for x
    x = 8,459,625,501.06/105,727.18
  6. Step 6: Final answer
    x = 80,013.72

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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.