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Finding the Fourth Proportional to 111,397.68, 153,729 and 61,097.04

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Solution

The fourth proportional to 111,397.68, 153,729 and 61,097.04 is: 84,314.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,397.68 : 153,729 = 61,097.04 : x
  2. Step 2: Convert to fraction form
    111,397.68/153,729 = 61,097.04/x
  3. Step 3: Cross multiply
    111,397.68x = 153,729 × 61,097.04
  4. Step 4: Simplify right side
    111,397.68x = 9,392,386,862.16
  5. Step 5: Solve for x
    x = 9,392,386,862.16/111,397.68
  6. Step 6: Final answer
    x = 84,314.03

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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.