Home / 111,528.16-153,909.12-61,230.40

Finding the Fourth Proportional to 111,528.16, 153,909.12 and 61,230.40

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Solution

The fourth proportional to 111,528.16, 153,909.12 and 61,230.40 is: 84,498.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,528.16 : 153,909.12 = 61,230.40 : x
  2. Step 2: Convert to fraction form
    111,528.16/153,909.12 = 61,230.40/x
  3. Step 3: Cross multiply
    111,528.16x = 153,909.12 × 61,230.40
  4. Step 4: Simplify right side
    111,528.16x = 9,423,916,981.25
  5. Step 5: Solve for x
    x = 9,423,916,981.25/111,528.16
  6. Step 6: Final answer
    x = 84,498.09

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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.