Home / 105,508.77-145,602.14-57,765.15

Finding the Fourth Proportional to 105,508.77, 145,602.14 and 57,765.15

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Solution

The fourth proportional to 105,508.77, 145,602.14 and 57,765.15 is: 79,715.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,508.77 : 145,602.14 = 57,765.15 : x
  2. Step 2: Convert to fraction form
    105,508.77/145,602.14 = 57,765.15/x
  3. Step 3: Cross multiply
    105,508.77x = 145,602.14 × 57,765.15
  4. Step 4: Simplify right side
    105,508.77x = 8,410,729,457.42
  5. Step 5: Solve for x
    x = 8,410,729,457.42/105,508.77
  6. Step 6: Final answer
    x = 79,715.93

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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.