Home / 145,670.49-218,432.55-84,900.33

Finding the Fourth Proportional to 145,670.49, 218,432.55 and 84,900.33

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Solution

The fourth proportional to 145,670.49, 218,432.55 and 84,900.33 is: 127,307.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,670.49 : 218,432.55 = 84,900.33 : x
  2. Step 2: Convert to fraction form
    145,670.49/218,432.55 = 84,900.33/x
  3. Step 3: Cross multiply
    145,670.49x = 218,432.55 × 84,900.33
  4. Step 4: Simplify right side
    145,670.49x = 18,544,994,804.21
  5. Step 5: Solve for x
    x = 18,544,994,804.21/145,670.49
  6. Step 6: Final answer
    x = 127,307.84

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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.