Home / 128,547,005.20-192,820,507.80-122,169,713.20

Finding the Fourth Proportional to 128,547,005.20, 192,820,507.80 and 122,169,713.20

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Solution

The fourth proportional to 128,547,005.20, 192,820,507.80 and 122,169,713.20 is: 183,254,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,547,005.20 : 192,820,507.80 = 122,169,713.20 : x
  2. Step 2: Convert to fraction form
    128,547,005.20/192,820,507.80 = 122,169,713.20/x
  3. Step 3: Cross multiply
    128,547,005.20x = 192,820,507.80 × 122,169,713.20
  4. Step 4: Simplify right side
    128,547,005.20x = 23,556,826,137,004,364
  5. Step 5: Solve for x
    x = 23,556,826,137,004,364/128,547,005.20
  6. Step 6: Final answer
    x = 183,254,569.80

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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.