Home / 86,229,816.40-129,155,767.80-76,656,005.20

Finding the Fourth Proportional to 86,229,816.40, 129,155,767.80 and 76,656,005.20

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Solution

The fourth proportional to 86,229,816.40, 129,155,767.80 and 76,656,005.20 is: 114,816,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,229,816.40 : 129,155,767.80 = 76,656,005.20 : x
  2. Step 2: Convert to fraction form
    86,229,816.40/129,155,767.80 = 76,656,005.20/x
  3. Step 3: Cross multiply
    86,229,816.40x = 129,155,767.80 × 76,656,005.20
  4. Step 4: Simplify right side
    86,229,816.40x = 9,900,565,208,086,792
  5. Step 5: Solve for x
    x = 9,900,565,208,086,792/86,229,816.40
  6. Step 6: Final answer
    x = 114,816,030.25

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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.