Home / 128,085,618.43-191,927,254.02-99,010,702.45

Finding the Fourth Proportional to 128,085,618.43, 191,927,254.02 and 99,010,702.45

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Solution

The fourth proportional to 128,085,618.43, 191,927,254.02 and 99,010,702.45 is: 148,360,545.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,085,618.43 : 191,927,254.02 = 99,010,702.45 : x
  2. Step 2: Convert to fraction form
    128,085,618.43/191,927,254.02 = 99,010,702.45/x
  3. Step 3: Cross multiply
    128,085,618.43x = 191,927,254.02 × 99,010,702.45
  4. Step 4: Simplify right side
    128,085,618.43x = 19,002,852,239,819,788
  5. Step 5: Solve for x
    x = 19,002,852,239,819,788/128,085,618.43
  6. Step 6: Final answer
    x = 148,360,545.65

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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.