Home / 152,039.20-228,058.80-77,130.40

Finding the Fourth Proportional to 152,039.20, 228,058.80 and 77,130.40

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Solution

The fourth proportional to 152,039.20, 228,058.80 and 77,130.40 is: 115,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,039.20 : 228,058.80 = 77,130.40 : x
  2. Step 2: Convert to fraction form
    152,039.20/228,058.80 = 77,130.40/x
  3. Step 3: Cross multiply
    152,039.20x = 228,058.80 × 77,130.40
  4. Step 4: Simplify right side
    152,039.20x = 17,590,266,467.52
  5. Step 5: Solve for x
    x = 17,590,266,467.52/152,039.20
  6. Step 6: Final answer
    x = 115,695.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.