Home / 151,416.60-208,975.02-86,911.32

Finding the Fourth Proportional to 151,416.60, 208,975.02 and 86,911.32

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Solution

The fourth proportional to 151,416.60, 208,975.02 and 86,911.32 is: 119,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,416.60 : 208,975.02 = 86,911.32 : x
  2. Step 2: Convert to fraction form
    151,416.60/208,975.02 = 86,911.32/x
  3. Step 3: Cross multiply
    151,416.60x = 208,975.02 × 86,911.32
  4. Step 4: Simplify right side
    151,416.60x = 18,162,294,835.23
  5. Step 5: Solve for x
    x = 18,162,294,835.23/151,416.60
  6. Step 6: Final answer
    x = 119,949.17

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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.