Home / 105,717.04-145,890.15-57,319.36

Finding the Fourth Proportional to 105,717.04, 145,890.15 and 57,319.36

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Solution

The fourth proportional to 105,717.04, 145,890.15 and 57,319.36 is: 79,101.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,717.04 : 145,890.15 = 57,319.36 : x
  2. Step 2: Convert to fraction form
    105,717.04/145,890.15 = 57,319.36/x
  3. Step 3: Cross multiply
    105,717.04x = 145,890.15 × 57,319.36
  4. Step 4: Simplify right side
    105,717.04x = 8,362,330,028.30
  5. Step 5: Solve for x
    x = 8,362,330,028.30/105,717.04
  6. Step 6: Final answer
    x = 79,101.06

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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.