Home / 156,398,899.28-215,820,109.32-86,779,868.24

Finding the Fourth Proportional to 156,398,899.28, 215,820,109.32 and 86,779,868.24

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Solution

The fourth proportional to 156,398,899.28, 215,820,109.32 and 86,779,868.24 is: 119,750,463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,398,899.28 : 215,820,109.32 = 86,779,868.24 : x
  2. Step 2: Convert to fraction form
    156,398,899.28/215,820,109.32 = 86,779,868.24/x
  3. Step 3: Cross multiply
    156,398,899.28x = 215,820,109.32 × 86,779,868.24
  4. Step 4: Simplify right side
    156,398,899.28x = 18,728,840,650,331,996
  5. Step 5: Solve for x
    x = 18,728,840,650,331,996/156,398,899.28
  6. Step 6: Final answer
    x = 119,750,463.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.