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Finding the Fourth Proportional to 156,368.80, 234,619.62 and 77,484.52

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Solution

The fourth proportional to 156,368.80, 234,619.62 and 77,484.52 is: 116,259.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,368.80 : 234,619.62 = 77,484.52 : x
  2. Step 2: Convert to fraction form
    156,368.80/234,619.62 = 77,484.52/x
  3. Step 3: Cross multiply
    156,368.80x = 234,619.62 × 77,484.52
  4. Step 4: Simplify right side
    156,368.80x = 18,179,388,638.28
  5. Step 5: Solve for x
    x = 18,179,388,638.28/156,368.80
  6. Step 6: Final answer
    x = 116,259.69

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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.