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Finding the Fourth Proportional to 164,967.04, 247,401.20 and 86,038.20

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Solution

The fourth proportional to 164,967.04, 247,401.20 and 86,038.20 is: 129,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,967.04 : 247,401.20 = 86,038.20 : x
  2. Step 2: Convert to fraction form
    164,967.04/247,401.20 = 86,038.20/x
  3. Step 3: Cross multiply
    164,967.04x = 247,401.20 × 86,038.20
  4. Step 4: Simplify right side
    164,967.04x = 21,285,953,925.84
  5. Step 5: Solve for x
    x = 21,285,953,925.84/164,967.04
  6. Step 6: Final answer
    x = 129,031.56

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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.