Home / 158,240.92-218,364-86,607.16

Finding the Fourth Proportional to 158,240.92, 218,364 and 86,607.16

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Solution

The fourth proportional to 158,240.92, 218,364 and 86,607.16 is: 119,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,240.92 : 218,364 = 86,607.16 : x
  2. Step 2: Convert to fraction form
    158,240.92/218,364 = 86,607.16/x
  3. Step 3: Cross multiply
    158,240.92x = 218,364 × 86,607.16
  4. Step 4: Simplify right side
    158,240.92x = 18,911,885,886.24
  5. Step 5: Solve for x
    x = 18,911,885,886.24/158,240.92
  6. Step 6: Final answer
    x = 119,513.25

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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.