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Finding the Fourth Proportional to 143,761,786.80, 215,495,713.80 and 70,866,452.40

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Solution

The fourth proportional to 143,761,786.80, 215,495,713.80 and 70,866,452.40 is: 106,227,232.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,761,786.80 : 215,495,713.80 = 70,866,452.40 : x
  2. Step 2: Convert to fraction form
    143,761,786.80/215,495,713.80 = 70,866,452.40/x
  3. Step 3: Cross multiply
    143,761,786.80x = 215,495,713.80 × 70,866,452.40
  4. Step 4: Simplify right side
    143,761,786.80x = 15,271,416,744,411,726
  5. Step 5: Solve for x
    x = 15,271,416,744,411,726/143,761,786.80
  6. Step 6: Final answer
    x = 106,227,232.45

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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.