Home / 99,100.08-136,753.74-56,661.39

Finding the Fourth Proportional to 99,100.08, 136,753.74 and 56,661.39

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Solution

The fourth proportional to 99,100.08, 136,753.74 and 56,661.39 is: 78,190.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,100.08 : 136,753.74 = 56,661.39 : x
  2. Step 2: Convert to fraction form
    99,100.08/136,753.74 = 56,661.39/x
  3. Step 3: Cross multiply
    99,100.08x = 136,753.74 × 56,661.39
  4. Step 4: Simplify right side
    99,100.08x = 7,748,656,996.10
  5. Step 5: Solve for x
    x = 7,748,656,996.10/99,100.08
  6. Step 6: Final answer
    x = 78,190.22

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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.