Home / 158,488.47-218,719.53-86,868.45

Finding the Fourth Proportional to 158,488.47, 218,719.53 and 86,868.45

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Solution

The fourth proportional to 158,488.47, 218,719.53 and 86,868.45 is: 119,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,488.47 : 218,719.53 = 86,868.45 : x
  2. Step 2: Convert to fraction form
    158,488.47/218,719.53 = 86,868.45/x
  3. Step 3: Cross multiply
    158,488.47x = 218,719.53 × 86,868.45
  4. Step 4: Simplify right side
    158,488.47x = 18,999,826,555.83
  5. Step 5: Solve for x
    x = 18,999,826,555.83/158,488.47
  6. Step 6: Final answer
    x = 119,881.44

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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.