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Finding the Fourth Proportional to 103,209, 154,683.98 and 55,822.20

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Solution

The fourth proportional to 103,209, 154,683.98 and 55,822.20 is: 83,663.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,209 : 154,683.98 = 55,822.20 : x
  2. Step 2: Convert to fraction form
    103,209/154,683.98 = 55,822.20/x
  3. Step 3: Cross multiply
    103,209x = 154,683.98 × 55,822.20
  4. Step 4: Simplify right side
    103,209x = 8,634,800,068.36
  5. Step 5: Solve for x
    x = 8,634,800,068.36/103,209
  6. Step 6: Final answer
    x = 83,663.25

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1.5x scale

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.