Home / 121,320,003.60-181,980,005.40-75,403,501.20

Finding the Fourth Proportional to 121,320,003.60, 181,980,005.40 and 75,403,501.20

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Solution

The fourth proportional to 121,320,003.60, 181,980,005.40 and 75,403,501.20 is: 113,105,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,320,003.60 : 181,980,005.40 = 75,403,501.20 : x
  2. Step 2: Convert to fraction form
    121,320,003.60/181,980,005.40 = 75,403,501.20/x
  3. Step 3: Cross multiply
    121,320,003.60x = 181,980,005.40 × 75,403,501.20
  4. Step 4: Simplify right side
    121,320,003.60x = 13,721,929,555,554,908
  5. Step 5: Solve for x
    x = 13,721,929,555,554,908/121,320,003.60
  6. Step 6: Final answer
    x = 113,105,251.80

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1.5x scale

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.