Home / 121,139,680.80-181,709,521.20-86,988,871.20

Finding the Fourth Proportional to 121,139,680.80, 181,709,521.20 and 86,988,871.20

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Solution

The fourth proportional to 121,139,680.80, 181,709,521.20 and 86,988,871.20 is: 130,483,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,139,680.80 : 181,709,521.20 = 86,988,871.20 : x
  2. Step 2: Convert to fraction form
    121,139,680.80/181,709,521.20 = 86,988,871.20/x
  3. Step 3: Cross multiply
    121,139,680.80x = 181,709,521.20 × 86,988,871.20
  4. Step 4: Simplify right side
    121,139,680.80x = 15,806,706,135,480,468
  5. Step 5: Solve for x
    x = 15,806,706,135,480,468/121,139,680.80
  6. Step 6: Final answer
    x = 130,483,306.80

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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.