Home / 99,871,941.60-149,807,912.40-77,197,125.60

Finding the Fourth Proportional to 99,871,941.60, 149,807,912.40 and 77,197,125.60

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Solution

The fourth proportional to 99,871,941.60, 149,807,912.40 and 77,197,125.60 is: 115,795,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,871,941.60 : 149,807,912.40 = 77,197,125.60 : x
  2. Step 2: Convert to fraction form
    99,871,941.60/149,807,912.40 = 77,197,125.60/x
  3. Step 3: Cross multiply
    99,871,941.60x = 149,807,912.40 × 77,197,125.60
  4. Step 4: Simplify right side
    99,871,941.60x = 11,564,740,229,416,598
  5. Step 5: Solve for x
    x = 11,564,740,229,416,598/99,871,941.60
  6. Step 6: Final answer
    x = 115,795,688.40

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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.