Home / 145,440.64-217,937.40-86,158.36

Finding the Fourth Proportional to 145,440.64, 217,937.40 and 86,158.36

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Solution

The fourth proportional to 145,440.64, 217,937.40 and 86,158.36 is: 129,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440.64 : 217,937.40 = 86,158.36 : x
  2. Step 2: Convert to fraction form
    145,440.64/217,937.40 = 86,158.36/x
  3. Step 3: Cross multiply
    145,440.64x = 217,937.40 × 86,158.36
  4. Step 4: Simplify right side
    145,440.64x = 18,777,128,966.66
  5. Step 5: Solve for x
    x = 18,777,128,966.66/145,440.64
  6. Step 6: Final answer
    x = 129,105.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.