Home / 126,881.16-190,343.70-42,649.56

Finding the Fourth Proportional to 126,881.16, 190,343.70 and 42,649.56

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Solution

The fourth proportional to 126,881.16, 190,343.70 and 42,649.56 is: 63,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,881.16 : 190,343.70 = 42,649.56 : x
  2. Step 2: Convert to fraction form
    126,881.16/190,343.70 = 42,649.56/x
  3. Step 3: Cross multiply
    126,881.16x = 190,343.70 × 42,649.56
  4. Step 4: Simplify right side
    126,881.16x = 8,118,075,053.77
  5. Step 5: Solve for x
    x = 8,118,075,053.77/126,881.16
  6. Step 6: Final answer
    x = 63,981.72

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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.