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Finding the Fourth Proportional to 115,281.25, 159,088.13 and 64,980.25

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Solution

The fourth proportional to 115,281.25, 159,088.13 and 64,980.25 is: 89,672.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,281.25 : 159,088.13 = 64,980.25 : x
  2. Step 2: Convert to fraction form
    115,281.25/159,088.13 = 64,980.25/x
  3. Step 3: Cross multiply
    115,281.25x = 159,088.13 × 64,980.25
  4. Step 4: Simplify right side
    115,281.25x = 10,337,586,459.43
  5. Step 5: Solve for x
    x = 10,337,586,459.43/115,281.25
  6. Step 6: Final answer
    x = 89,672.75

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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.