Home / 121,119,344.20-181,679,016.30-72,746,403.40

Finding the Fourth Proportional to 121,119,344.20, 181,679,016.30 and 72,746,403.40

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Solution

The fourth proportional to 121,119,344.20, 181,679,016.30 and 72,746,403.40 is: 109,119,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,119,344.20 : 181,679,016.30 = 72,746,403.40 : x
  2. Step 2: Convert to fraction form
    121,119,344.20/181,679,016.30 = 72,746,403.40/x
  3. Step 3: Cross multiply
    121,119,344.20x = 181,679,016.30 × 72,746,403.40
  4. Step 4: Simplify right side
    121,119,344.20x = 13,216,495,009,074,978
  5. Step 5: Solve for x
    x = 13,216,495,009,074,978/121,119,344.20
  6. Step 6: Final answer
    x = 109,119,605.10

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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.