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Finding the Fourth Proportional to 111,440.68, 153,788.34 and 61,140.04

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Solution

The fourth proportional to 111,440.68, 153,788.34 and 61,140.04 is: 84,373.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,440.68 : 153,788.34 = 61,140.04 : x
  2. Step 2: Convert to fraction form
    111,440.68/153,788.34 = 61,140.04/x
  3. Step 3: Cross multiply
    111,440.68x = 153,788.34 × 61,140.04
  4. Step 4: Simplify right side
    111,440.68x = 9,402,625,259.13
  5. Step 5: Solve for x
    x = 9,402,625,259.13/111,440.68
  6. Step 6: Final answer
    x = 84,373.37

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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.