Home / 105,166.12-145,129.06-57,419.24

Finding the Fourth Proportional to 105,166.12, 145,129.06 and 57,419.24

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Solution

The fourth proportional to 105,166.12, 145,129.06 and 57,419.24 is: 79,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,166.12 : 145,129.06 = 57,419.24 : x
  2. Step 2: Convert to fraction form
    105,166.12/145,129.06 = 57,419.24/x
  3. Step 3: Cross multiply
    105,166.12x = 145,129.06 × 57,419.24
  4. Step 4: Simplify right side
    105,166.12x = 8,333,200,327.11
  5. Step 5: Solve for x
    x = 8,333,200,327.11/105,166.12
  6. Step 6: Final answer
    x = 79,238.45

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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.