Home / 128,756,273.60-193,134,410.40-77,611,966.40

Finding the Fourth Proportional to 128,756,273.60, 193,134,410.40 and 77,611,966.40

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Solution

The fourth proportional to 128,756,273.60, 193,134,410.40 and 77,611,966.40 is: 116,417,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,756,273.60 : 193,134,410.40 = 77,611,966.40 : x
  2. Step 2: Convert to fraction form
    128,756,273.60/193,134,410.40 = 77,611,966.40/x
  3. Step 3: Cross multiply
    128,756,273.60x = 193,134,410.40 × 77,611,966.40
  4. Step 4: Simplify right side
    128,756,273.60x = 14,989,541,370,648,612
  5. Step 5: Solve for x
    x = 14,989,541,370,648,612/128,756,273.60
  6. Step 6: Final answer
    x = 116,417,949.60

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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.