Home / 102,171,120.80-153,256,681.20-91,085,655.20

Finding the Fourth Proportional to 102,171,120.80, 153,256,681.20 and 91,085,655.20

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Solution

The fourth proportional to 102,171,120.80, 153,256,681.20 and 91,085,655.20 is: 136,628,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,171,120.80 : 153,256,681.20 = 91,085,655.20 : x
  2. Step 2: Convert to fraction form
    102,171,120.80/153,256,681.20 = 91,085,655.20/x
  3. Step 3: Cross multiply
    102,171,120.80x = 153,256,681.20 × 91,085,655.20
  4. Step 4: Simplify right side
    102,171,120.80x = 13,959,485,220,879,522
  5. Step 5: Solve for x
    x = 13,959,485,220,879,522/102,171,120.80
  6. Step 6: Final answer
    x = 136,628,482.80

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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.