Home / 121,902,653.64-168,216,928.02-69,693,889.80

Finding the Fourth Proportional to 121,902,653.64, 168,216,928.02 and 69,693,889.80

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Solution

The fourth proportional to 121,902,653.64, 168,216,928.02 and 69,693,889.80 is: 96,172,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,902,653.64 : 168,216,928.02 = 69,693,889.80 : x
  2. Step 2: Convert to fraction form
    121,902,653.64/168,216,928.02 = 69,693,889.80/x
  3. Step 3: Cross multiply
    121,902,653.64x = 168,216,928.02 × 69,693,889.80
  4. Step 4: Simplify right side
    121,902,653.64x = 11,723,692,043,920,412
  5. Step 5: Solve for x
    x = 11,723,692,043,920,412/121,902,653.64
  6. Step 6: Final answer
    x = 96,172,574.54

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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.