Home / 128,017.02-176,635.21-74,270.91

Finding the Fourth Proportional to 128,017.02, 176,635.21 and 74,270.91

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Solution

The fourth proportional to 128,017.02, 176,635.21 and 74,270.91 is: 102,477.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,017.02 : 176,635.21 = 74,270.91 : x
  2. Step 2: Convert to fraction form
    128,017.02/176,635.21 = 74,270.91/x
  3. Step 3: Cross multiply
    128,017.02x = 176,635.21 × 74,270.91
  4. Step 4: Simplify right side
    128,017.02x = 13,118,857,784.74
  5. Step 5: Solve for x
    x = 13,118,857,784.74/128,017.02
  6. Step 6: Final answer
    x = 102,477.45

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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.