Home / 121,168,981.30-181,748,806.35-40,389,949.30

Finding the Fourth Proportional to 121,168,981.30, 181,748,806.35 and 40,389,949.30

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Solution

The fourth proportional to 121,168,981.30, 181,748,806.35 and 40,389,949.30 is: 60,583,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,168,981.30 : 181,748,806.35 = 40,389,949.30 : x
  2. Step 2: Convert to fraction form
    121,168,981.30/181,748,806.35 = 40,389,949.30/x
  3. Step 3: Cross multiply
    121,168,981.30x = 181,748,806.35 × 40,389,949.30
  4. Step 4: Simplify right side
    121,168,981.30x = 7,340,825,073,812,017
  5. Step 5: Solve for x
    x = 7,340,825,073,812,017/121,168,981.30
  6. Step 6: Final answer
    x = 60,583,368.74

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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.