Home / 136,070.13-187,868.40-121,685.34

Finding the Fourth Proportional to 136,070.13, 187,868.40 and 121,685.34

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Solution

The fourth proportional to 136,070.13, 187,868.40 and 121,685.34 is: 168,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,070.13 : 187,868.40 = 121,685.34 : x
  2. Step 2: Convert to fraction form
    136,070.13/187,868.40 = 121,685.34/x
  3. Step 3: Cross multiply
    136,070.13x = 187,868.40 × 121,685.34
  4. Step 4: Simplify right side
    136,070.13x = 22,860,830,129.26
  5. Step 5: Solve for x
    x = 22,860,830,129.26/136,070.13
  6. Step 6: Final answer
    x = 168,007.70

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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.