Home / 98,855.28-136,430.10-56,420.22

Finding the Fourth Proportional to 98,855.28, 136,430.10 and 56,420.22

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Solution

The fourth proportional to 98,855.28, 136,430.10 and 56,420.22 is: 77,865.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,855.28 : 136,430.10 = 56,420.22 : x
  2. Step 2: Convert to fraction form
    98,855.28/136,430.10 = 56,420.22/x
  3. Step 3: Cross multiply
    98,855.28x = 136,430.10 × 56,420.22
  4. Step 4: Simplify right side
    98,855.28x = 7,697,416,256.62
  5. Step 5: Solve for x
    x = 7,697,416,256.62/98,855.28
  6. Step 6: Final answer
    x = 77,865.50

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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.