Home / 128,455,031.29-177,268,118.23-69,717,697.17

Finding the Fourth Proportional to 128,455,031.29, 177,268,118.23 and 69,717,697.17

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Solution

The fourth proportional to 128,455,031.29, 177,268,118.23 and 69,717,697.17 is: 96,210,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455,031.29 : 177,268,118.23 = 69,717,697.17 : x
  2. Step 2: Convert to fraction form
    128,455,031.29/177,268,118.23 = 69,717,697.17/x
  3. Step 3: Cross multiply
    128,455,031.29x = 177,268,118.23 × 69,717,697.17
  4. Step 4: Simplify right side
    128,455,031.29x = 12,358,724,983,768,556
  5. Step 5: Solve for x
    x = 12,358,724,983,768,556/128,455,031.29
  6. Step 6: Final answer
    x = 96,210,517.10

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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.