Home / 155,415.15-214,464.65-91,729.71

Finding the Fourth Proportional to 155,415.15, 214,464.65 and 91,729.71

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Solution

The fourth proportional to 155,415.15, 214,464.65 and 91,729.71 is: 126,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,415.15 : 214,464.65 = 91,729.71 : x
  2. Step 2: Convert to fraction form
    155,415.15/214,464.65 = 91,729.71/x
  3. Step 3: Cross multiply
    155,415.15x = 214,464.65 × 91,729.71
  4. Step 4: Simplify right side
    155,415.15x = 19,672,779,691.10
  5. Step 5: Solve for x
    x = 19,672,779,691.10/155,415.15
  6. Step 6: Final answer
    x = 126,582.12

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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.