Home / 207,000.18-309,712.95-127,918.26

Finding the Fourth Proportional to 207,000.18, 309,712.95 and 127,918.26

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Solution

The fourth proportional to 207,000.18, 309,712.95 and 127,918.26 is: 191,390.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,000.18 : 309,712.95 = 127,918.26 : x
  2. Step 2: Convert to fraction form
    207,000.18/309,712.95 = 127,918.26/x
  3. Step 3: Cross multiply
    207,000.18x = 309,712.95 × 127,918.26
  4. Step 4: Simplify right side
    207,000.18x = 39,617,941,663.47
  5. Step 5: Solve for x
    x = 39,617,941,663.47/207,000.18
  6. Step 6: Final answer
    x = 191,390.86

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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.