Home / 111,030.48-153,272.16-77,153.40

Finding the Fourth Proportional to 111,030.48, 153,272.16 and 77,153.40

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Solution

The fourth proportional to 111,030.48, 153,272.16 and 77,153.40 is: 106,506.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,030.48 : 153,272.16 = 77,153.40 : x
  2. Step 2: Convert to fraction form
    111,030.48/153,272.16 = 77,153.40/x
  3. Step 3: Cross multiply
    111,030.48x = 153,272.16 × 77,153.40
  4. Step 4: Simplify right side
    111,030.48x = 11,825,468,269.34
  5. Step 5: Solve for x
    x = 11,825,468,269.34/111,030.48
  6. Step 6: Final answer
    x = 106,506.50

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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.