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Finding the Fourth Proportional to 100,602,209.20, 150,903,313.80 and 99,645,615.40

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Solution

The fourth proportional to 100,602,209.20, 150,903,313.80 and 99,645,615.40 is: 149,468,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,602,209.20 : 150,903,313.80 = 99,645,615.40 : x
  2. Step 2: Convert to fraction form
    100,602,209.20/150,903,313.80 = 99,645,615.40/x
  3. Step 3: Cross multiply
    100,602,209.20x = 150,903,313.80 × 99,645,615.40
  4. Step 4: Simplify right side
    100,602,209.20x = 15,036,853,569,500,314
  5. Step 5: Solve for x
    x = 15,036,853,569,500,314/100,602,209.20
  6. Step 6: Final answer
    x = 149,468,423.10

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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.