Home / 105,450.30-145,521.39-57,703.63

Finding the Fourth Proportional to 105,450.30, 145,521.39 and 57,703.63

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Solution

The fourth proportional to 105,450.30, 145,521.39 and 57,703.63 is: 79,631.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,450.30 : 145,521.39 = 57,703.63 : x
  2. Step 2: Convert to fraction form
    105,450.30/145,521.39 = 57,703.63/x
  3. Step 3: Cross multiply
    105,450.30x = 145,521.39 × 57,703.63
  4. Step 4: Simplify right side
    105,450.30x = 8,397,112,445.65
  5. Step 5: Solve for x
    x = 8,397,112,445.65/105,450.30
  6. Step 6: Final answer
    x = 79,631.00

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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.