Home / 78,732,133.60-118,098,200.40-50,105,178.40

Finding the Fourth Proportional to 78,732,133.60, 118,098,200.40 and 50,105,178.40

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Solution

The fourth proportional to 78,732,133.60, 118,098,200.40 and 50,105,178.40 is: 75,157,767.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,133.60 : 118,098,200.40 = 50,105,178.40 : x
  2. Step 2: Convert to fraction form
    78,732,133.60/118,098,200.40 = 50,105,178.40/x
  3. Step 3: Cross multiply
    78,732,133.60x = 118,098,200.40 × 50,105,178.40
  4. Step 4: Simplify right side
    78,732,133.60x = 5,917,331,399,760,951
  5. Step 5: Solve for x
    x = 5,917,331,399,760,951/78,732,133.60
  6. Step 6: Final answer
    x = 75,157,767.60

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1.5x scale

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.