Home / 139,533,363-192,554,160.12-77,653,685.16

Finding the Fourth Proportional to 139,533,363, 192,554,160.12 and 77,653,685.16

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Solution

The fourth proportional to 139,533,363, 192,554,160.12 and 77,653,685.16 is: 107,161,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,533,363 : 192,554,160.12 = 77,653,685.16 : x
  2. Step 2: Convert to fraction form
    139,533,363/192,554,160.12 = 77,653,685.16/x
  3. Step 3: Cross multiply
    139,533,363x = 192,554,160.12 × 77,653,685.16
  4. Step 4: Simplify right side
    139,533,363x = 14,952,540,126,206,708
  5. Step 5: Solve for x
    x = 14,952,540,126,206,708/139,533,363
  6. Step 6: Final answer
    x = 107,161,038.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.