Home / 136,159.10-187,888.35-78,802.59

Finding the Fourth Proportional to 136,159.10, 187,888.35 and 78,802.59

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Solution

The fourth proportional to 136,159.10, 187,888.35 and 78,802.59 is: 108,741.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,159.10 : 187,888.35 = 78,802.59 : x
  2. Step 2: Convert to fraction form
    136,159.10/187,888.35 = 78,802.59/x
  3. Step 3: Cross multiply
    136,159.10x = 187,888.35 × 78,802.59
  4. Step 4: Simplify right side
    136,159.10x = 14,806,088,610.83
  5. Step 5: Solve for x
    x = 14,806,088,610.83/136,159.10
  6. Step 6: Final answer
    x = 108,741.09

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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.