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Finding the Fourth Proportional to 134,810.71, 186,055.25 and 77,449.93

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Solution

The fourth proportional to 134,810.71, 186,055.25 and 77,449.93 is: 106,890.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,810.71 : 186,055.25 = 77,449.93 : x
  2. Step 2: Convert to fraction form
    134,810.71/186,055.25 = 77,449.93/x
  3. Step 3: Cross multiply
    134,810.71x = 186,055.25 × 77,449.93
  4. Step 4: Simplify right side
    134,810.71x = 14,409,966,088.63
  5. Step 5: Solve for x
    x = 14,409,966,088.63/134,810.71
  6. Step 6: Final answer
    x = 106,890.37

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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.