Home / 118,889,709.90-178,334,564.85-86,473,121.10

Finding the Fourth Proportional to 118,889,709.90, 178,334,564.85 and 86,473,121.10

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Solution

The fourth proportional to 118,889,709.90, 178,334,564.85 and 86,473,121.10 is: 129,709,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,889,709.90 : 178,334,564.85 = 86,473,121.10 : x
  2. Step 2: Convert to fraction form
    118,889,709.90/178,334,564.85 = 86,473,121.10/x
  3. Step 3: Cross multiply
    118,889,709.90x = 178,334,564.85 × 86,473,121.10
  4. Step 4: Simplify right side
    118,889,709.90x = 15,421,146,422,589,852
  5. Step 5: Solve for x
    x = 15,421,146,422,589,852/118,889,709.90
  6. Step 6: Final answer
    x = 129,709,681.65

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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.