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Finding the Fourth Proportional to 115,674.78, 159,630.10 and 64,686.93

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Solution

The fourth proportional to 115,674.78, 159,630.10 and 64,686.93 is: 89,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,674.78 : 159,630.10 = 64,686.93 : x
  2. Step 2: Convert to fraction form
    115,674.78/159,630.10 = 64,686.93/x
  3. Step 3: Cross multiply
    115,674.78x = 159,630.10 × 64,686.93
  4. Step 4: Simplify right side
    115,674.78x = 10,325,980,344.26
  5. Step 5: Solve for x
    x = 10,325,980,344.26/115,674.78
  6. Step 6: Final answer
    x = 89,267.34

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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.