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Finding the Fourth Proportional to 134,809.71, 186,053.87 and 77,448.93

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Solution

The fourth proportional to 134,809.71, 186,053.87 and 77,448.93 is: 106,888.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,809.71 : 186,053.87 = 77,448.93 : x
  2. Step 2: Convert to fraction form
    134,809.71/186,053.87 = 77,448.93/x
  3. Step 3: Cross multiply
    134,809.71x = 186,053.87 × 77,448.93
  4. Step 4: Simplify right side
    134,809.71x = 14,409,672,649.78
  5. Step 5: Solve for x
    x = 14,409,672,649.78/134,809.71
  6. Step 6: Final answer
    x = 106,888.98

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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.