Home / 121,072,987.32-167,084,251.02-66,072,386.52

Finding the Fourth Proportional to 121,072,987.32, 167,084,251.02 and 66,072,386.52

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Solution

The fourth proportional to 121,072,987.32, 167,084,251.02 and 66,072,386.52 is: 91,181,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,072,987.32 : 167,084,251.02 = 66,072,386.52 : x
  2. Step 2: Convert to fraction form
    121,072,987.32/167,084,251.02 = 66,072,386.52/x
  3. Step 3: Cross multiply
    121,072,987.32x = 167,084,251.02 × 66,072,386.52
  4. Step 4: Simplify right side
    121,072,987.32x = 11,039,655,214,798,146
  5. Step 5: Solve for x
    x = 11,039,655,214,798,146/121,072,987.32
  6. Step 6: Final answer
    x = 91,181,818.99

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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.