Home / 120,673,921.20-181,010,881.80-72,300,980.40

Finding the Fourth Proportional to 120,673,921.20, 181,010,881.80 and 72,300,980.40

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Solution

The fourth proportional to 120,673,921.20, 181,010,881.80 and 72,300,980.40 is: 108,451,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,673,921.20 : 181,010,881.80 = 72,300,980.40 : x
  2. Step 2: Convert to fraction form
    120,673,921.20/181,010,881.80 = 72,300,980.40/x
  3. Step 3: Cross multiply
    120,673,921.20x = 181,010,881.80 × 72,300,980.40
  4. Step 4: Simplify right side
    120,673,921.20x = 13,087,264,217,208,518
  5. Step 5: Solve for x
    x = 13,087,264,217,208,518/120,673,921.20
  6. Step 6: Final answer
    x = 108,451,470.60

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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.