Home / 102,147.47-140,905.90-61,301.15

Finding the Fourth Proportional to 102,147.47, 140,905.90 and 61,301.15

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Solution

The fourth proportional to 102,147.47, 140,905.90 and 61,301.15 is: 84,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,147.47 : 140,905.90 = 61,301.15 : x
  2. Step 2: Convert to fraction form
    102,147.47/140,905.90 = 61,301.15/x
  3. Step 3: Cross multiply
    102,147.47x = 140,905.90 × 61,301.15
  4. Step 4: Simplify right side
    102,147.47x = 8,637,693,711.79
  5. Step 5: Solve for x
    x = 8,637,693,711.79/102,147.47
  6. Step 6: Final answer
    x = 84,561.01

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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.