Home / 118,889,714.40-178,334,571.60-86,473,125.60

Finding the Fourth Proportional to 118,889,714.40, 178,334,571.60 and 86,473,125.60

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Solution

The fourth proportional to 118,889,714.40, 178,334,571.60 and 86,473,125.60 is: 129,709,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,889,714.40 : 178,334,571.60 = 86,473,125.60 : x
  2. Step 2: Convert to fraction form
    118,889,714.40/178,334,571.60 = 86,473,125.60/x
  3. Step 3: Cross multiply
    118,889,714.40x = 178,334,571.60 × 86,473,125.60
  4. Step 4: Simplify right side
    118,889,714.40x = 15,421,147,808,788,992
  5. Step 5: Solve for x
    x = 15,421,147,808,788,992/118,889,714.40
  6. Step 6: Final answer
    x = 129,709,688.40

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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.