Home / 98,602.31-148,034.79-66,688.55

Finding the Fourth Proportional to 98,602.31, 148,034.79 and 66,688.55

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Solution

The fourth proportional to 98,602.31, 148,034.79 and 66,688.55 is: 100,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,602.31 : 148,034.79 = 66,688.55 : x
  2. Step 2: Convert to fraction form
    98,602.31/148,034.79 = 66,688.55/x
  3. Step 3: Cross multiply
    98,602.31x = 148,034.79 × 66,688.55
  4. Step 4: Simplify right side
    98,602.31x = 9,872,224,754.48
  5. Step 5: Solve for x
    x = 9,872,224,754.48/98,602.31
  6. Step 6: Final answer
    x = 100,121.64

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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.