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Finding the Fourth Proportional to 115,158.08, 158,916.04 and 64,857.08

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Solution

The fourth proportional to 115,158.08, 158,916.04 and 64,857.08 is: 89,501.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,158.08 : 158,916.04 = 64,857.08 : x
  2. Step 2: Convert to fraction form
    115,158.08/158,916.04 = 64,857.08/x
  3. Step 3: Cross multiply
    115,158.08x = 158,916.04 × 64,857.08
  4. Step 4: Simplify right side
    115,158.08x = 10,306,829,362.84
  5. Step 5: Solve for x
    x = 10,306,829,362.84/115,158.08
  6. Step 6: Final answer
    x = 89,501.58

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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.