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Finding the Fourth Proportional to 109,457.51, 151,051.11 and 61,710.51

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Solution

The fourth proportional to 109,457.51, 151,051.11 and 61,710.51 is: 85,160.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,457.51 : 151,051.11 = 61,710.51 : x
  2. Step 2: Convert to fraction form
    109,457.51/151,051.11 = 61,710.51/x
  3. Step 3: Cross multiply
    109,457.51x = 151,051.11 × 61,710.51
  4. Step 4: Simplify right side
    109,457.51x = 9,321,441,034.17
  5. Step 5: Solve for x
    x = 9,321,441,034.17/109,457.51
  6. Step 6: Final answer
    x = 85,160.36

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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.