Home / 121,949,973.50-168,291,125.21-66,195,357.91

Finding the Fourth Proportional to 121,949,973.50, 168,291,125.21 and 66,195,357.91

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Solution

The fourth proportional to 121,949,973.50, 168,291,125.21 and 66,195,357.91 is: 91,349,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,949,973.50 : 168,291,125.21 = 66,195,357.91 : x
  2. Step 2: Convert to fraction form
    121,949,973.50/168,291,125.21 = 66,195,357.91/x
  3. Step 3: Cross multiply
    121,949,973.50x = 168,291,125.21 × 66,195,357.91
  4. Step 4: Simplify right side
    121,949,973.50x = 11,140,091,266,097,334
  5. Step 5: Solve for x
    x = 11,140,091,266,097,334/121,949,973.50
  6. Step 6: Final answer
    x = 91,349,681.73

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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.