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Finding the Fourth Proportional to 162,590.80, 243,448.80 and 127,307.20

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Solution

The fourth proportional to 162,590.80, 243,448.80 and 127,307.20 is: 190,618.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,590.80 : 243,448.80 = 127,307.20 : x
  2. Step 2: Convert to fraction form
    162,590.80/243,448.80 = 127,307.20/x
  3. Step 3: Cross multiply
    162,590.80x = 243,448.80 × 127,307.20
  4. Step 4: Simplify right side
    162,590.80x = 30,992,785,071.36
  5. Step 5: Solve for x
    x = 30,992,785,071.36/162,590.80
  6. Step 6: Final answer
    x = 190,618.32

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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.