Home / 128,908,082.90-193,078,689.15-111,901,970.90

Finding the Fourth Proportional to 128,908,082.90, 193,078,689.15 and 111,901,970.90

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Solution

The fourth proportional to 128,908,082.90, 193,078,689.15 and 111,901,970.90 is: 167,606,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,908,082.90 : 193,078,689.15 = 111,901,970.90 : x
  2. Step 2: Convert to fraction form
    128,908,082.90/193,078,689.15 = 111,901,970.90/x
  3. Step 3: Cross multiply
    128,908,082.90x = 193,078,689.15 × 111,901,970.90
  4. Step 4: Simplify right side
    128,908,082.90x = 21,605,885,854,673,448
  5. Step 5: Solve for x
    x = 21,605,885,854,673,448/128,908,082.90
  6. Step 6: Final answer
    x = 167,606,913.15

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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.