Home / 156,984,670.35-216,636,685.79-87,370,040.07

Finding the Fourth Proportional to 156,984,670.35, 216,636,685.79 and 87,370,040.07

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Solution

The fourth proportional to 156,984,670.35, 216,636,685.79 and 87,370,040.07 is: 120,569,453.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,984,670.35 : 216,636,685.79 = 87,370,040.07 : x
  2. Step 2: Convert to fraction form
    156,984,670.35/216,636,685.79 = 87,370,040.07/x
  3. Step 3: Cross multiply
    156,984,670.35x = 216,636,685.79 × 87,370,040.07
  4. Step 4: Simplify right side
    156,984,670.35x = 18,927,555,917,667,448
  5. Step 5: Solve for x
    x = 18,927,555,917,667,448/156,984,670.35
  6. Step 6: Final answer
    x = 120,569,453.54

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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.