Home / 113,427.58-156,539.10-65,681.77

Finding the Fourth Proportional to 113,427.58, 156,539.10 and 65,681.77

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Solution

The fourth proportional to 113,427.58, 156,539.10 and 65,681.77 is: 90,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,427.58 : 156,539.10 = 65,681.77 : x
  2. Step 2: Convert to fraction form
    113,427.58/156,539.10 = 65,681.77/x
  3. Step 3: Cross multiply
    113,427.58x = 156,539.10 × 65,681.77
  4. Step 4: Simplify right side
    113,427.58x = 10,281,765,162.21
  5. Step 5: Solve for x
    x = 10,281,765,162.21/113,427.58
  6. Step 6: Final answer
    x = 90,646.08

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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.