Home / 111,478.16-153,829.68-66,148.36

Finding the Fourth Proportional to 111,478.16, 153,829.68 and 66,148.36

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Solution

The fourth proportional to 111,478.16, 153,829.68 and 66,148.36 is: 91,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.16 : 153,829.68 = 66,148.36 : x
  2. Step 2: Convert to fraction form
    111,478.16/153,829.68 = 66,148.36/x
  3. Step 3: Cross multiply
    111,478.16x = 153,829.68 × 66,148.36
  4. Step 4: Simplify right side
    111,478.16x = 10,175,581,051.32
  5. Step 5: Solve for x
    x = 10,175,581,051.32/111,478.16
  6. Step 6: Final answer
    x = 91,278.70

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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.