Home / 158,318,802.40-218,479,569.03-86,791,556.19

Finding the Fourth Proportional to 158,318,802.40, 218,479,569.03 and 86,791,556.19

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Solution

The fourth proportional to 158,318,802.40, 218,479,569.03 and 86,791,556.19 is: 119,772,140.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,318,802.40 : 218,479,569.03 = 86,791,556.19 : x
  2. Step 2: Convert to fraction form
    158,318,802.40/218,479,569.03 = 86,791,556.19/x
  3. Step 3: Cross multiply
    158,318,802.40x = 218,479,569.03 × 86,791,556.19
  4. Step 4: Simplify right side
    158,318,802.40x = 18,962,181,791,834,228
  5. Step 5: Solve for x
    x = 18,962,181,791,834,228/158,318,802.40
  6. Step 6: Final answer
    x = 119,772,140.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.