Home / 101,760.32-140,430.40-56,439.20

Finding the Fourth Proportional to 101,760.32, 140,430.40 and 56,439.20

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Solution

The fourth proportional to 101,760.32, 140,430.40 and 56,439.20 is: 77,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,760.32 : 140,430.40 = 56,439.20 : x
  2. Step 2: Convert to fraction form
    101,760.32/140,430.40 = 56,439.20/x
  3. Step 3: Cross multiply
    101,760.32x = 140,430.40 × 56,439.20
  4. Step 4: Simplify right side
    101,760.32x = 7,925,779,431.68
  5. Step 5: Solve for x
    x = 7,925,779,431.68/101,760.32
  6. Step 6: Final answer
    x = 77,886.74

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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.