Home / 145,216.80-217,519.02-66,397.32

Finding the Fourth Proportional to 145,216.80, 217,519.02 and 66,397.32

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Solution

The fourth proportional to 145,216.80, 217,519.02 and 66,397.32 is: 99,455.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,216.80 : 217,519.02 = 66,397.32 : x
  2. Step 2: Convert to fraction form
    145,216.80/217,519.02 = 66,397.32/x
  3. Step 3: Cross multiply
    145,216.80x = 217,519.02 × 66,397.32
  4. Step 4: Simplify right side
    145,216.80x = 14,442,679,977.03
  5. Step 5: Solve for x
    x = 14,442,679,977.03/145,216.80
  6. Step 6: Final answer
    x = 99,455.99

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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.