Home / 105,055.20-157,451.40-52,479.36

Finding the Fourth Proportional to 105,055.20, 157,451.40 and 52,479.36

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Solution

The fourth proportional to 105,055.20, 157,451.40 and 52,479.36 is: 78,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,055.20 : 157,451.40 = 52,479.36 : x
  2. Step 2: Convert to fraction form
    105,055.20/157,451.40 = 52,479.36/x
  3. Step 3: Cross multiply
    105,055.20x = 157,451.40 × 52,479.36
  4. Step 4: Simplify right side
    105,055.20x = 8,262,948,703.10
  5. Step 5: Solve for x
    x = 8,262,948,703.10/105,055.20
  6. Step 6: Final answer
    x = 78,653.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.