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Finding the Fourth Proportional to 102,205.70, 153,308.55 and 93,020.30

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Solution

The fourth proportional to 102,205.70, 153,308.55 and 93,020.30 is: 139,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,205.70 : 153,308.55 = 93,020.30 : x
  2. Step 2: Convert to fraction form
    102,205.70/153,308.55 = 93,020.30/x
  3. Step 3: Cross multiply
    102,205.70x = 153,308.55 × 93,020.30
  4. Step 4: Simplify right side
    102,205.70x = 14,260,807,313.57
  5. Step 5: Solve for x
    x = 14,260,807,313.57/102,205.70
  6. Step 6: Final answer
    x = 139,530.45

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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.