Home / 145,162,904.40-217,744,356.60-128,156,792.40

Finding the Fourth Proportional to 145,162,904.40, 217,744,356.60 and 128,156,792.40

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Solution

The fourth proportional to 145,162,904.40, 217,744,356.60 and 128,156,792.40 is: 192,235,188.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,162,904.40 : 217,744,356.60 = 128,156,792.40 : x
  2. Step 2: Convert to fraction form
    145,162,904.40/217,744,356.60 = 128,156,792.40/x
  3. Step 3: Cross multiply
    145,162,904.40x = 217,744,356.60 × 128,156,792.40
  4. Step 4: Simplify right side
    145,162,904.40x = 27,905,418,305,057,772
  5. Step 5: Solve for x
    x = 27,905,418,305,057,772/145,162,904.40
  6. Step 6: Final answer
    x = 192,235,188.60

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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.