Home / 91,292.20-136,938.30-42,140.20

Finding the Fourth Proportional to 91,292.20, 136,938.30 and 42,140.20

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Solution

The fourth proportional to 91,292.20, 136,938.30 and 42,140.20 is: 63,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,292.20 : 136,938.30 = 42,140.20 : x
  2. Step 2: Convert to fraction form
    91,292.20/136,938.30 = 42,140.20/x
  3. Step 3: Cross multiply
    91,292.20x = 136,938.30 × 42,140.20
  4. Step 4: Simplify right side
    91,292.20x = 5,770,607,349.66
  5. Step 5: Solve for x
    x = 5,770,607,349.66/91,292.20
  6. Step 6: Final answer
    x = 63,210.30

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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.