Home / 111,689,128.80-167,659,664.40-86,242,946.40

Finding the Fourth Proportional to 111,689,128.80, 167,659,664.40 and 86,242,946.40

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Solution

The fourth proportional to 111,689,128.80, 167,659,664.40 and 86,242,946.40 is: 129,461,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,689,128.80 : 167,659,664.40 = 86,242,946.40 : x
  2. Step 2: Convert to fraction form
    111,689,128.80/167,659,664.40 = 86,242,946.40/x
  3. Step 3: Cross multiply
    111,689,128.80x = 167,659,664.40 × 86,242,946.40
  4. Step 4: Simplify right side
    111,689,128.80x = 14,459,463,450,291,190
  5. Step 5: Solve for x
    x = 14,459,463,450,291,190/111,689,128.80
  6. Step 6: Final answer
    x = 129,461,690.73

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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.