Home / 121,238,994.78-181,973,465.87-75,041,119.31

Finding the Fourth Proportional to 121,238,994.78, 181,973,465.87 and 75,041,119.31

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Solution

The fourth proportional to 121,238,994.78, 181,973,465.87 and 75,041,119.31 is: 112,632,842.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,238,994.78 : 181,973,465.87 = 75,041,119.31 : x
  2. Step 2: Convert to fraction form
    121,238,994.78/181,973,465.87 = 75,041,119.31/x
  3. Step 3: Cross multiply
    121,238,994.78x = 181,973,465.87 × 75,041,119.31
  4. Step 4: Simplify right side
    121,238,994.78x = 13,655,492,562,319,812
  5. Step 5: Solve for x
    x = 13,655,492,562,319,812/121,238,994.78
  6. Step 6: Final answer
    x = 112,632,842.16

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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.