Home / 86,208,084.80-129,312,127.20-76,854,723.20

Finding the Fourth Proportional to 86,208,084.80, 129,312,127.20 and 76,854,723.20

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Solution

The fourth proportional to 86,208,084.80, 129,312,127.20 and 76,854,723.20 is: 115,282,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208,084.80 : 129,312,127.20 = 76,854,723.20 : x
  2. Step 2: Convert to fraction form
    86,208,084.80/129,312,127.20 = 76,854,723.20/x
  3. Step 3: Cross multiply
    86,208,084.80x = 129,312,127.20 × 76,854,723.20
  4. Step 4: Simplify right side
    86,208,084.80x = 9,938,247,742,359,192
  5. Step 5: Solve for x
    x = 9,938,247,742,359,192/86,208,084.80
  6. Step 6: Final answer
    x = 115,282,084.80

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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.