Home / 105,451.80-145,521.54-57,703.92

Finding the Fourth Proportional to 105,451.80, 145,521.54 and 57,703.92

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Solution

The fourth proportional to 105,451.80, 145,521.54 and 57,703.92 is: 79,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,451.80 : 145,521.54 = 57,703.92 : x
  2. Step 2: Convert to fraction form
    105,451.80/145,521.54 = 57,703.92/x
  3. Step 3: Cross multiply
    105,451.80x = 145,521.54 × 57,703.92
  4. Step 4: Simplify right side
    105,451.80x = 8,397,163,302.44
  5. Step 5: Solve for x
    x = 8,397,163,302.44/105,451.80
  6. Step 6: Final answer
    x = 79,630.35

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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.