Home / 136,108.71-187,802.40-79,509.15

Finding the Fourth Proportional to 136,108.71, 187,802.40 and 79,509.15

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Solution

The fourth proportional to 136,108.71, 187,802.40 and 79,509.15 is: 109,706.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,108.71 : 187,802.40 = 79,509.15 : x
  2. Step 2: Convert to fraction form
    136,108.71/187,802.40 = 79,509.15/x
  3. Step 3: Cross multiply
    136,108.71x = 187,802.40 × 79,509.15
  4. Step 4: Simplify right side
    136,108.71x = 14,932,009,191.96
  5. Step 5: Solve for x
    x = 14,932,009,191.96/136,108.71
  6. Step 6: Final answer
    x = 109,706.49

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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.