Home / 115,411.11-159,270.36-64,423.63

Finding the Fourth Proportional to 115,411.11, 159,270.36 and 64,423.63

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Solution

The fourth proportional to 115,411.11, 159,270.36 and 64,423.63 is: 88,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,411.11 : 159,270.36 = 64,423.63 : x
  2. Step 2: Convert to fraction form
    115,411.11/159,270.36 = 64,423.63/x
  3. Step 3: Cross multiply
    115,411.11x = 159,270.36 × 64,423.63
  4. Step 4: Simplify right side
    115,411.11x = 10,260,774,742.61
  5. Step 5: Solve for x
    x = 10,260,774,742.61/115,411.11
  6. Step 6: Final answer
    x = 88,906.30

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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.