Home / 157,878.02-217,865.19-86,260.50

Finding the Fourth Proportional to 157,878.02, 217,865.19 and 86,260.50

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Solution

The fourth proportional to 157,878.02, 217,865.19 and 86,260.50 is: 119,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,878.02 : 217,865.19 = 86,260.50 : x
  2. Step 2: Convert to fraction form
    157,878.02/217,865.19 = 86,260.50/x
  3. Step 3: Cross multiply
    157,878.02x = 217,865.19 × 86,260.50
  4. Step 4: Simplify right side
    157,878.02x = 18,793,160,222.00
  5. Step 5: Solve for x
    x = 18,793,160,222.00/157,878.02
  6. Step 6: Final answer
    x = 119,035.95

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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.