Home / 207,417.20-310,907.10-81,008.60

Finding the Fourth Proportional to 207,417.20, 310,907.10 and 81,008.60

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Solution

The fourth proportional to 207,417.20, 310,907.10 and 81,008.60 is: 121,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,417.20 : 310,907.10 = 81,008.60 : x
  2. Step 2: Convert to fraction form
    207,417.20/310,907.10 = 81,008.60/x
  3. Step 3: Cross multiply
    207,417.20x = 310,907.10 × 81,008.60
  4. Step 4: Simplify right side
    207,417.20x = 25,186,148,901.06
  5. Step 5: Solve for x
    x = 25,186,148,901.06/207,417.20
  6. Step 6: Final answer
    x = 121,427.48

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1.5x scale

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.