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Finding the Fourth Proportional to 100,602,307.80, 150,903,461.70 and 86,253,400.80

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Solution

The fourth proportional to 100,602,307.80, 150,903,461.70 and 86,253,400.80 is: 129,380,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,602,307.80 : 150,903,461.70 = 86,253,400.80 : x
  2. Step 2: Convert to fraction form
    100,602,307.80/150,903,461.70 = 86,253,400.80/x
  3. Step 3: Cross multiply
    100,602,307.80x = 150,903,461.70 × 86,253,400.80
  4. Step 4: Simplify right side
    100,602,307.80x = 13,015,936,764,117,548
  5. Step 5: Solve for x
    x = 13,015,936,764,117,548/100,602,307.80
  6. Step 6: Final answer
    x = 129,380,101.20

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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.