Home / 145,164,920.40-217,747,380.60-128,158,808.40

Finding the Fourth Proportional to 145,164,920.40, 217,747,380.60 and 128,158,808.40

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Solution

The fourth proportional to 145,164,920.40, 217,747,380.60 and 128,158,808.40 is: 192,238,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,164,920.40 : 217,747,380.60 = 128,158,808.40 : x
  2. Step 2: Convert to fraction form
    145,164,920.40/217,747,380.60 = 128,158,808.40/x
  3. Step 3: Cross multiply
    145,164,920.40x = 217,747,380.60 × 128,158,808.40
  4. Step 4: Simplify right side
    145,164,920.40x = 27,906,244,829,917,276
  5. Step 5: Solve for x
    x = 27,906,244,829,917,276/145,164,920.40
  6. Step 6: Final answer
    x = 192,238,212.60

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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.