Home / 115,458.17-159,331.79-65,156.81

Finding the Fourth Proportional to 115,458.17, 159,331.79 and 65,156.81

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Solution

The fourth proportional to 115,458.17, 159,331.79 and 65,156.81 is: 89,916.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,458.17 : 159,331.79 = 65,156.81 : x
  2. Step 2: Convert to fraction form
    115,458.17/159,331.79 = 65,156.81/x
  3. Step 3: Cross multiply
    115,458.17x = 159,331.79 × 65,156.81
  4. Step 4: Simplify right side
    115,458.17x = 10,381,550,534.22
  5. Step 5: Solve for x
    x = 10,381,550,534.22/115,458.17
  6. Step 6: Final answer
    x = 89,916.12

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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.