Home / 86,907,515.20-130,361,272.80-72,877,472.80

Finding the Fourth Proportional to 86,907,515.20, 130,361,272.80 and 72,877,472.80

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Solution

The fourth proportional to 86,907,515.20, 130,361,272.80 and 72,877,472.80 is: 109,316,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,907,515.20 : 130,361,272.80 = 72,877,472.80 : x
  2. Step 2: Convert to fraction form
    86,907,515.20/130,361,272.80 = 72,877,472.80/x
  3. Step 3: Cross multiply
    86,907,515.20x = 130,361,272.80 × 72,877,472.80
  4. Step 4: Simplify right side
    86,907,515.20x = 9,500,400,112,655,380
  5. Step 5: Solve for x
    x = 9,500,400,112,655,380/86,907,515.20
  6. Step 6: Final answer
    x = 109,316,209.20

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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.