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Finding the Fourth Proportional to 207,130.80, 310,465.80 and 113,703.60

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Solution

The fourth proportional to 207,130.80, 310,465.80 and 113,703.60 is: 170,428.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,130.80 : 310,465.80 = 113,703.60 : x
  2. Step 2: Convert to fraction form
    207,130.80/310,465.80 = 113,703.60/x
  3. Step 3: Cross multiply
    207,130.80x = 310,465.80 × 113,703.60
  4. Step 4: Simplify right side
    207,130.80x = 35,301,079,136.88
  5. Step 5: Solve for x
    x = 35,301,079,136.88/207,130.80
  6. Step 6: Final answer
    x = 170,428.92

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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.