Home / 121,126,690.80-181,571,938.20-69,258,049.20

Finding the Fourth Proportional to 121,126,690.80, 181,571,938.20 and 69,258,049.20

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Solution

The fourth proportional to 121,126,690.80, 181,571,938.20 and 69,258,049.20 is: 103,819,547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,126,690.80 : 181,571,938.20 = 69,258,049.20 : x
  2. Step 2: Convert to fraction form
    121,126,690.80/181,571,938.20 = 69,258,049.20/x
  3. Step 3: Cross multiply
    121,126,690.80x = 181,571,938.20 × 69,258,049.20
  4. Step 4: Simplify right side
    121,126,690.80x = 12,575,318,229,194,960
  5. Step 5: Solve for x
    x = 12,575,318,229,194,960/121,126,690.80
  6. Step 6: Final answer
    x = 103,819,547.50

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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.