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Finding the Fourth Proportional to 134,688.79, 185,870.28 and 74,259.01

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Solution

The fourth proportional to 134,688.79, 185,870.28 and 74,259.01 is: 102,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,688.79 : 185,870.28 = 74,259.01 : x
  2. Step 2: Convert to fraction form
    134,688.79/185,870.28 = 74,259.01/x
  3. Step 3: Cross multiply
    134,688.79x = 185,870.28 × 74,259.01
  4. Step 4: Simplify right side
    134,688.79x = 13,802,542,981.22
  5. Step 5: Solve for x
    x = 13,802,542,981.22/134,688.79
  6. Step 6: Final answer
    x = 102,477.30

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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.