Home / 128,304,792.60-192,457,188.90-77,160,485.40

Finding the Fourth Proportional to 128,304,792.60, 192,457,188.90 and 77,160,485.40

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Solution

The fourth proportional to 128,304,792.60, 192,457,188.90 and 77,160,485.40 is: 115,740,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,792.60 : 192,457,188.90 = 77,160,485.40 : x
  2. Step 2: Convert to fraction form
    128,304,792.60/192,457,188.90 = 77,160,485.40/x
  3. Step 3: Cross multiply
    128,304,792.60x = 192,457,188.90 × 77,160,485.40
  4. Step 4: Simplify right side
    128,304,792.60x = 14,850,090,114,243,494
  5. Step 5: Solve for x
    x = 14,850,090,114,243,494/128,304,792.60
  6. Step 6: Final answer
    x = 115,740,728.10

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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.