Home / 105,815.13-146,029.09-58,070.19

Finding the Fourth Proportional to 105,815.13, 146,029.09 and 58,070.19

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Solution

The fourth proportional to 105,815.13, 146,029.09 and 58,070.19 is: 80,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,815.13 : 146,029.09 = 58,070.19 : x
  2. Step 2: Convert to fraction form
    105,815.13/146,029.09 = 58,070.19/x
  3. Step 3: Cross multiply
    105,815.13x = 146,029.09 × 58,070.19
  4. Step 4: Simplify right side
    105,815.13x = 8,479,937,001.83
  5. Step 5: Solve for x
    x = 8,479,937,001.83/105,815.13
  6. Step 6: Final answer
    x = 80,139.17

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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.