Home / 128,758,001.60-193,137,002.40-77,613,694.40

Finding the Fourth Proportional to 128,758,001.60, 193,137,002.40 and 77,613,694.40

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Solution

The fourth proportional to 128,758,001.60, 193,137,002.40 and 77,613,694.40 is: 116,420,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,758,001.60 : 193,137,002.40 = 77,613,694.40 : x
  2. Step 2: Convert to fraction form
    128,758,001.60/193,137,002.40 = 77,613,694.40/x
  3. Step 3: Cross multiply
    128,758,001.60x = 193,137,002.40 × 77,613,694.40
  4. Step 4: Simplify right side
    128,758,001.60x = 14,990,076,281,605,668
  5. Step 5: Solve for x
    x = 14,990,076,281,605,668/128,758,001.60
  6. Step 6: Final answer
    x = 116,420,541.60

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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.