Home / 128,012,947.84-176,658,307.68-69,275,597.32

Finding the Fourth Proportional to 128,012,947.84, 176,658,307.68 and 69,275,597.32

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Solution

The fourth proportional to 128,012,947.84, 176,658,307.68 and 69,275,597.32 is: 95,600,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,012,947.84 : 176,658,307.68 = 69,275,597.32 : x
  2. Step 2: Convert to fraction form
    128,012,947.84/176,658,307.68 = 69,275,597.32/x
  3. Step 3: Cross multiply
    128,012,947.84x = 176,658,307.68 × 69,275,597.32
  4. Step 4: Simplify right side
    128,012,947.84x = 12,238,109,786,072,342
  5. Step 5: Solve for x
    x = 12,238,109,786,072,342/128,012,947.84
  6. Step 6: Final answer
    x = 95,600,562.23

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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.