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Finding the Fourth Proportional to 111,478.04, 153,967.46 and 73,407.79

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Solution

The fourth proportional to 111,478.04, 153,967.46 and 73,407.79 is: 101,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.04 : 153,967.46 = 73,407.79 : x
  2. Step 2: Convert to fraction form
    111,478.04/153,967.46 = 73,407.79/x
  3. Step 3: Cross multiply
    111,478.04x = 153,967.46 × 73,407.79
  4. Step 4: Simplify right side
    111,478.04x = 11,302,410,970.51
  5. Step 5: Solve for x
    x = 11,302,410,970.51/111,478.04
  6. Step 6: Final answer
    x = 101,386.88

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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.