Home / 103,051.15-142,158.35-64,257.12

Finding the Fourth Proportional to 103,051.15, 142,158.35 and 64,257.12

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Solution

The fourth proportional to 103,051.15, 142,158.35 and 64,257.12 is: 88,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,051.15 : 142,158.35 = 64,257.12 : x
  2. Step 2: Convert to fraction form
    103,051.15/142,158.35 = 64,257.12/x
  3. Step 3: Cross multiply
    103,051.15x = 142,158.35 × 64,257.12
  4. Step 4: Simplify right side
    103,051.15x = 9,134,686,315.59
  5. Step 5: Solve for x
    x = 9,134,686,315.59/103,051.15
  6. Step 6: Final answer
    x = 88,642.26

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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.