Home / 100,887.36-139,220.02-57,835.98

Finding the Fourth Proportional to 100,887.36, 139,220.02 and 57,835.98

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Solution

The fourth proportional to 100,887.36, 139,220.02 and 57,835.98 is: 79,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,887.36 : 139,220.02 = 57,835.98 : x
  2. Step 2: Convert to fraction form
    100,887.36/139,220.02 = 57,835.98/x
  3. Step 3: Cross multiply
    100,887.36x = 139,220.02 × 57,835.98
  4. Step 4: Simplify right side
    100,887.36x = 8,051,926,292.32
  5. Step 5: Solve for x
    x = 8,051,926,292.32/100,887.36
  6. Step 6: Final answer
    x = 79,811.05

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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.