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Finding the Fourth Proportional to 134,779.74, 185,998.20 and 74,349.30

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Solution

The fourth proportional to 134,779.74, 185,998.20 and 74,349.30 is: 102,603.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,779.74 : 185,998.20 = 74,349.30 : x
  2. Step 2: Convert to fraction form
    134,779.74/185,998.20 = 74,349.30/x
  3. Step 3: Cross multiply
    134,779.74x = 185,998.20 × 74,349.30
  4. Step 4: Simplify right side
    134,779.74x = 13,828,835,971.26
  5. Step 5: Solve for x
    x = 13,828,835,971.26/134,779.74
  6. Step 6: Final answer
    x = 102,603.22

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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.