Home / 136,206.45-187,966.63-74,959.69

Finding the Fourth Proportional to 136,206.45, 187,966.63 and 74,959.69

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Solution

The fourth proportional to 136,206.45, 187,966.63 and 74,959.69 is: 103,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,206.45 : 187,966.63 = 74,959.69 : x
  2. Step 2: Convert to fraction form
    136,206.45/187,966.63 = 74,959.69/x
  3. Step 3: Cross multiply
    136,206.45x = 187,966.63 × 74,959.69
  4. Step 4: Simplify right side
    136,206.45x = 14,089,920,315.14
  5. Step 5: Solve for x
    x = 14,089,920,315.14/136,206.45
  6. Step 6: Final answer
    x = 103,445.32

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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.