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Finding the Fourth Proportional to 153,368.60, 230,063.70 and 86,840.60

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Solution

The fourth proportional to 153,368.60, 230,063.70 and 86,840.60 is: 130,267.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,368.60 : 230,063.70 = 86,840.60 : x
  2. Step 2: Convert to fraction form
    153,368.60/230,063.70 = 86,840.60/x
  3. Step 3: Cross multiply
    153,368.60x = 230,063.70 × 86,840.60
  4. Step 4: Simplify right side
    153,368.60x = 19,978,869,746.22
  5. Step 5: Solve for x
    x = 19,978,869,746.22/153,368.60
  6. Step 6: Final answer
    x = 130,267.02

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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.