Home / 99,420.76-137,202.93-56,403.13

Finding the Fourth Proportional to 99,420.76, 137,202.93 and 56,403.13

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Solution

The fourth proportional to 99,420.76, 137,202.93 and 56,403.13 is: 77,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,420.76 : 137,202.93 = 56,403.13 : x
  2. Step 2: Convert to fraction form
    99,420.76/137,202.93 = 56,403.13/x
  3. Step 3: Cross multiply
    99,420.76x = 137,202.93 × 56,403.13
  4. Step 4: Simplify right side
    99,420.76x = 7,738,674,697.17
  5. Step 5: Solve for x
    x = 7,738,674,697.17/99,420.76
  6. Step 6: Final answer
    x = 77,837.61

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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.