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Finding the Fourth Proportional to 100,849,555.80, 151,274,333.70 and 86,500,648.80

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Solution

The fourth proportional to 100,849,555.80, 151,274,333.70 and 86,500,648.80 is: 129,750,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,849,555.80 : 151,274,333.70 = 86,500,648.80 : x
  2. Step 2: Convert to fraction form
    100,849,555.80/151,274,333.70 = 86,500,648.80/x
  3. Step 3: Cross multiply
    100,849,555.80x = 151,274,333.70 × 86,500,648.80
  4. Step 4: Simplify right side
    100,849,555.80x = 13,085,328,011,837,704
  5. Step 5: Solve for x
    x = 13,085,328,011,837,704/100,849,555.80
  6. Step 6: Final answer
    x = 129,750,973.20

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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.