Home / 155,920.41-215,154.10-115,106.25

Finding the Fourth Proportional to 155,920.41, 215,154.10 and 115,106.25

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Solution

The fourth proportional to 155,920.41, 215,154.10 and 115,106.25 is: 158,834.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,920.41 : 215,154.10 = 115,106.25 : x
  2. Step 2: Convert to fraction form
    155,920.41/215,154.10 = 115,106.25/x
  3. Step 3: Cross multiply
    155,920.41x = 215,154.10 × 115,106.25
  4. Step 4: Simplify right side
    155,920.41x = 24,765,580,259.59
  5. Step 5: Solve for x
    x = 24,765,580,259.59/155,920.41
  6. Step 6: Final answer
    x = 158,834.75

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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.