Home / 88,189.11-121,671-57,972.06

Finding the Fourth Proportional to 88,189.11, 121,671 and 57,972.06

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Solution

The fourth proportional to 88,189.11, 121,671 and 57,972.06 is: 79,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,189.11 : 121,671 = 57,972.06 : x
  2. Step 2: Convert to fraction form
    88,189.11/121,671 = 57,972.06/x
  3. Step 3: Cross multiply
    88,189.11x = 121,671 × 57,972.06
  4. Step 4: Simplify right side
    88,189.11x = 7,053,518,512.26
  5. Step 5: Solve for x
    x = 7,053,518,512.26/88,189.11
  6. Step 6: Final answer
    x = 79,981.74

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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.