Home / 102,759,407.20-141,670,797.12-81,636,272.56

Finding the Fourth Proportional to 102,759,407.20, 141,670,797.12 and 81,636,272.56

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Solution

The fourth proportional to 102,759,407.20, 141,670,797.12 and 81,636,272.56 is: 112,549,070.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,759,407.20 : 141,670,797.12 = 81,636,272.56 : x
  2. Step 2: Convert to fraction form
    102,759,407.20/141,670,797.12 = 81,636,272.56/x
  3. Step 3: Cross multiply
    102,759,407.20x = 141,670,797.12 × 81,636,272.56
  4. Step 4: Simplify right side
    102,759,407.20x = 11,565,475,807,480,784
  5. Step 5: Solve for x
    x = 11,565,475,807,480,784/102,759,407.20
  6. Step 6: Final answer
    x = 112,549,070.91

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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.