Home / 115,068,655.89-172,601,802.86-66,515,615.64

Finding the Fourth Proportional to 115,068,655.89, 172,601,802.86 and 66,515,615.64

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Solution

The fourth proportional to 115,068,655.89, 172,601,802.86 and 66,515,615.64 is: 99,772,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,068,655.89 : 172,601,802.86 = 66,515,615.64 : x
  2. Step 2: Convert to fraction form
    115,068,655.89/172,601,802.86 = 66,515,615.64/x
  3. Step 3: Cross multiply
    115,068,655.89x = 172,601,802.86 × 66,515,615.64
  4. Step 4: Simplify right side
    115,068,655.89x = 11,480,715,178,370,924
  5. Step 5: Solve for x
    x = 11,480,715,178,370,924/115,068,655.89
  6. Step 6: Final answer
    x = 99,772,740.80

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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.