Home / 112,702.15-168,990.04-77,203.59

Finding the Fourth Proportional to 112,702.15, 168,990.04 and 77,203.59

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Solution

The fourth proportional to 112,702.15, 168,990.04 and 77,203.59 is: 115,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,702.15 : 168,990.04 = 77,203.59 : x
  2. Step 2: Convert to fraction form
    112,702.15/168,990.04 = 77,203.59/x
  3. Step 3: Cross multiply
    112,702.15x = 168,990.04 × 77,203.59
  4. Step 4: Simplify right side
    112,702.15x = 13,046,637,762.24
  5. Step 5: Solve for x
    x = 13,046,637,762.24/112,702.15
  6. Step 6: Final answer
    x = 115,762.10

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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.