Home / 156,315,802.88-215,813,666.24-100,658,052.48

Finding the Fourth Proportional to 156,315,802.88, 215,813,666.24 and 100,658,052.48

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Solution

The fourth proportional to 156,315,802.88, 215,813,666.24 and 100,658,052.48 is: 138,971,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,315,802.88 : 215,813,666.24 = 100,658,052.48 : x
  2. Step 2: Convert to fraction form
    156,315,802.88/215,813,666.24 = 100,658,052.48/x
  3. Step 3: Cross multiply
    156,315,802.88x = 215,813,666.24 × 100,658,052.48
  4. Step 4: Simplify right side
    156,315,802.88x = 21,723,383,342,287,128
  5. Step 5: Solve for x
    x = 21,723,383,342,287,128/156,315,802.88
  6. Step 6: Final answer
    x = 138,971,127.31

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1.5x scale

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.