Home / 91,316.20-136,974.30-42,164.20

Finding the Fourth Proportional to 91,316.20, 136,974.30 and 42,164.20

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Solution

The fourth proportional to 91,316.20, 136,974.30 and 42,164.20 is: 63,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,316.20 : 136,974.30 = 42,164.20 : x
  2. Step 2: Convert to fraction form
    91,316.20/136,974.30 = 42,164.20/x
  3. Step 3: Cross multiply
    91,316.20x = 136,974.30 × 42,164.20
  4. Step 4: Simplify right side
    91,316.20x = 5,775,411,780.06
  5. Step 5: Solve for x
    x = 5,775,411,780.06/91,316.20
  6. Step 6: Final answer
    x = 63,246.30

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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.