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Finding the Fourth Proportional to 158,165.35, 218,271.71 and 86,545.35

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Solution

The fourth proportional to 158,165.35, 218,271.71 and 86,545.35 is: 119,434.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,165.35 : 218,271.71 = 86,545.35 : x
  2. Step 2: Convert to fraction form
    158,165.35/218,271.71 = 86,545.35/x
  3. Step 3: Cross multiply
    158,165.35x = 218,271.71 × 86,545.35
  4. Step 4: Simplify right side
    158,165.35x = 18,890,401,753.41
  5. Step 5: Solve for x
    x = 18,890,401,753.41/158,165.35
  6. Step 6: Final answer
    x = 119,434.52

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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.