Home / 122,017.90-168,335.04-76,681.36

Finding the Fourth Proportional to 122,017.90, 168,335.04 and 76,681.36

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Solution

The fourth proportional to 122,017.90, 168,335.04 and 76,681.36 is: 105,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,017.90 : 168,335.04 = 76,681.36 : x
  2. Step 2: Convert to fraction form
    122,017.90/168,335.04 = 76,681.36/x
  3. Step 3: Cross multiply
    122,017.90x = 168,335.04 × 76,681.36
  4. Step 4: Simplify right side
    122,017.90x = 12,908,159,802.85
  5. Step 5: Solve for x
    x = 12,908,159,802.85/122,017.90
  6. Step 6: Final answer
    x = 105,789.07

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1.5x scale

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.