Home / 137,838,457.60-206,757,686.40-86,820,121.60

Finding the Fourth Proportional to 137,838,457.60, 206,757,686.40 and 86,820,121.60

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Solution

The fourth proportional to 137,838,457.60, 206,757,686.40 and 86,820,121.60 is: 130,230,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,838,457.60 : 206,757,686.40 = 86,820,121.60 : x
  2. Step 2: Convert to fraction form
    137,838,457.60/206,757,686.40 = 86,820,121.60/x
  3. Step 3: Cross multiply
    137,838,457.60x = 206,757,686.40 × 86,820,121.60
  4. Step 4: Simplify right side
    137,838,457.60x = 17,950,727,474,982,666
  5. Step 5: Solve for x
    x = 17,950,727,474,982,666/137,838,457.60
  6. Step 6: Final answer
    x = 130,230,182.40

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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.