Home / 100,985.64-139,337.73-57,962.49

Finding the Fourth Proportional to 100,985.64, 139,337.73 and 57,962.49

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Solution

The fourth proportional to 100,985.64, 139,337.73 and 57,962.49 is: 79,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,985.64 : 139,337.73 = 57,962.49 : x
  2. Step 2: Convert to fraction form
    100,985.64/139,337.73 = 57,962.49/x
  3. Step 3: Cross multiply
    100,985.64x = 139,337.73 × 57,962.49
  4. Step 4: Simplify right side
    100,985.64x = 8,076,361,781.75
  5. Step 5: Solve for x
    x = 8,076,361,781.75/100,985.64
  6. Step 6: Final answer
    x = 79,975.35

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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.