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Finding the Fourth Proportional to 86,572.20, 121,551 and 86,572.20

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Solution

The fourth proportional to 86,572.20, 121,551 and 86,572.20 is: 121,551.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,572.20 : 121,551 = 86,572.20 : x
  2. Step 2: Convert to fraction form
    86,572.20/121,551 = 86,572.20/x
  3. Step 3: Cross multiply
    86,572.20x = 121,551 × 86,572.20
  4. Step 4: Simplify right side
    86,572.20x = 10,522,937,482.20
  5. Step 5: Solve for x
    x = 10,522,937,482.20/86,572.20
  6. Step 6: Final answer
    x = 121,551.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.