Home / 121,740.10-168,053.07-74,008.69

Finding the Fourth Proportional to 121,740.10, 168,053.07 and 74,008.69

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Solution

The fourth proportional to 121,740.10, 168,053.07 and 74,008.69 is: 102,163.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,740.10 : 168,053.07 = 74,008.69 : x
  2. Step 2: Convert to fraction form
    121,740.10/168,053.07 = 74,008.69/x
  3. Step 3: Cross multiply
    121,740.10x = 168,053.07 × 74,008.69
  4. Step 4: Simplify right side
    121,740.10x = 12,437,387,561.18
  5. Step 5: Solve for x
    x = 12,437,387,561.18/121,740.10
  6. Step 6: Final answer
    x = 102,163.44

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1.5x scale

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.