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Finding the Fourth Proportional to 133,079.70, 199,619.55 and 69,875.40

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Solution

The fourth proportional to 133,079.70, 199,619.55 and 69,875.40 is: 104,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.70 : 199,619.55 = 69,875.40 : x
  2. Step 2: Convert to fraction form
    133,079.70/199,619.55 = 69,875.40/x
  3. Step 3: Cross multiply
    133,079.70x = 199,619.55 × 69,875.40
  4. Step 4: Simplify right side
    133,079.70x = 13,948,495,904.07
  5. Step 5: Solve for x
    x = 13,948,495,904.07/133,079.70
  6. Step 6: Final answer
    x = 104,813.10

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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.