Home / 208,049,849.32-286,999,941.16-128,639,526.33

Finding the Fourth Proportional to 208,049,849.32, 286,999,941.16 and 128,639,526.33

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Solution

The fourth proportional to 208,049,849.32, 286,999,941.16 and 128,639,526.33 is: 177,455,242.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,049,849.32 : 286,999,941.16 = 128,639,526.33 : x
  2. Step 2: Convert to fraction form
    208,049,849.32/286,999,941.16 = 128,639,526.33/x
  3. Step 3: Cross multiply
    208,049,849.32x = 286,999,941.16 × 128,639,526.33
  4. Step 4: Simplify right side
    208,049,849.32x = 36,919,536,487,560,272
  5. Step 5: Solve for x
    x = 36,919,536,487,560,272/208,049,849.32
  6. Step 6: Final answer
    x = 177,455,242.62

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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.