Home / 105,450.04-145,521.05-57,703.39

Finding the Fourth Proportional to 105,450.04, 145,521.05 and 57,703.39

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Solution

The fourth proportional to 105,450.04, 145,521.05 and 57,703.39 is: 79,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,450.04 : 145,521.05 = 57,703.39 : x
  2. Step 2: Convert to fraction form
    105,450.04/145,521.05 = 57,703.39/x
  3. Step 3: Cross multiply
    105,450.04x = 145,521.05 × 57,703.39
  4. Step 4: Simplify right side
    105,450.04x = 8,397,057,901.36
  5. Step 5: Solve for x
    x = 8,397,057,901.36/105,450.04
  6. Step 6: Final answer
    x = 79,630.68

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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.