Home / 155,988.78-215,259.56-88,004.85

Finding the Fourth Proportional to 155,988.78, 215,259.56 and 88,004.85

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Solution

The fourth proportional to 155,988.78, 215,259.56 and 88,004.85 is: 121,443.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,988.78 : 215,259.56 = 88,004.85 : x
  2. Step 2: Convert to fraction form
    155,988.78/215,259.56 = 88,004.85/x
  3. Step 3: Cross multiply
    155,988.78x = 215,259.56 × 88,004.85
  4. Step 4: Simplify right side
    155,988.78x = 18,943,884,848.84
  5. Step 5: Solve for x
    x = 18,943,884,848.84/155,988.78
  6. Step 6: Final answer
    x = 121,443.89

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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.