Home / 118,889,713.90-178,334,570.85-86,473,125.10

Finding the Fourth Proportional to 118,889,713.90, 178,334,570.85 and 86,473,125.10

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Solution

The fourth proportional to 118,889,713.90, 178,334,570.85 and 86,473,125.10 is: 129,709,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,889,713.90 : 178,334,570.85 = 86,473,125.10 : x
  2. Step 2: Convert to fraction form
    118,889,713.90/178,334,570.85 = 86,473,125.10/x
  3. Step 3: Cross multiply
    118,889,713.90x = 178,334,570.85 × 86,473,125.10
  4. Step 4: Simplify right side
    118,889,713.90x = 15,421,147,654,766,862
  5. Step 5: Solve for x
    x = 15,421,147,654,766,862/118,889,713.90
  6. Step 6: Final answer
    x = 129,709,687.65

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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.