Home / 168,497,345.40-252,746,018.10-139,775,911.80

Finding the Fourth Proportional to 168,497,345.40, 252,746,018.10 and 139,775,911.80

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Solution

The fourth proportional to 168,497,345.40, 252,746,018.10 and 139,775,911.80 is: 209,663,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,497,345.40 : 252,746,018.10 = 139,775,911.80 : x
  2. Step 2: Convert to fraction form
    168,497,345.40/252,746,018.10 = 139,775,911.80/x
  3. Step 3: Cross multiply
    168,497,345.40x = 252,746,018.10 × 139,775,911.80
  4. Step 4: Simplify right side
    168,497,345.40x = 35,327,805,133,746,804
  5. Step 5: Solve for x
    x = 35,327,805,133,746,804/168,497,345.40
  6. Step 6: Final answer
    x = 209,663,867.70

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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.