Home / 155,945,356.47-215,196,066.10-85,367,313.27

Finding the Fourth Proportional to 155,945,356.47, 215,196,066.10 and 85,367,313.27

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Solution

The fourth proportional to 155,945,356.47, 215,196,066.10 and 85,367,313.27 is: 117,802,225.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945,356.47 : 215,196,066.10 = 85,367,313.27 : x
  2. Step 2: Convert to fraction form
    155,945,356.47/215,196,066.10 = 85,367,313.27/x
  3. Step 3: Cross multiply
    155,945,356.47x = 215,196,066.10 × 85,367,313.27
  4. Step 4: Simplify right side
    155,945,356.47x = 18,370,709,989,230,324
  5. Step 5: Solve for x
    x = 18,370,709,989,230,324/155,945,356.47
  6. Step 6: Final answer
    x = 117,802,225.12

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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.