Home / 138,523,381.60-207,648,020.40-65,612,009.20

Finding the Fourth Proportional to 138,523,381.60, 207,648,020.40 and 65,612,009.20

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Solution

The fourth proportional to 138,523,381.60, 207,648,020.40 and 65,612,009.20 is: 98,353,098.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,523,381.60 : 207,648,020.40 = 65,612,009.20 : x
  2. Step 2: Convert to fraction form
    138,523,381.60/207,648,020.40 = 65,612,009.20/x
  3. Step 3: Cross multiply
    138,523,381.60x = 207,648,020.40 × 65,612,009.20
  4. Step 4: Simplify right side
    138,523,381.60x = 13,624,203,824,846,588
  5. Step 5: Solve for x
    x = 13,624,203,824,846,588/138,523,381.60
  6. Step 6: Final answer
    x = 98,353,098.72

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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.