Home / 145,538.16-218,047.54-78,935.82

Finding the Fourth Proportional to 145,538.16, 218,047.54 and 78,935.82

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Solution

The fourth proportional to 145,538.16, 218,047.54 and 78,935.82 is: 118,262.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,538.16 : 218,047.54 = 78,935.82 : x
  2. Step 2: Convert to fraction form
    145,538.16/218,047.54 = 78,935.82/x
  3. Step 3: Cross multiply
    145,538.16x = 218,047.54 × 78,935.82
  4. Step 4: Simplify right side
    145,538.16x = 17,211,761,368.88
  5. Step 5: Solve for x
    x = 17,211,761,368.88/145,538.16
  6. Step 6: Final answer
    x = 118,262.88

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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.