Home / 90,667.70-136,001.55-81,482.30

Finding the Fourth Proportional to 90,667.70, 136,001.55 and 81,482.30

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Solution

The fourth proportional to 90,667.70, 136,001.55 and 81,482.30 is: 122,223.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,667.70 : 136,001.55 = 81,482.30 : x
  2. Step 2: Convert to fraction form
    90,667.70/136,001.55 = 81,482.30/x
  3. Step 3: Cross multiply
    90,667.70x = 136,001.55 × 81,482.30
  4. Step 4: Simplify right side
    90,667.70x = 11,081,719,097.57
  5. Step 5: Solve for x
    x = 11,081,719,097.57/90,667.70
  6. Step 6: Final answer
    x = 122,223.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.