Home / 128,242.04-176,967.06-71,642.48

Finding the Fourth Proportional to 128,242.04, 176,967.06 and 71,642.48

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Solution

The fourth proportional to 128,242.04, 176,967.06 and 71,642.48 is: 98,862.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,242.04 : 176,967.06 = 71,642.48 : x
  2. Step 2: Convert to fraction form
    128,242.04/176,967.06 = 71,642.48/x
  3. Step 3: Cross multiply
    128,242.04x = 176,967.06 × 71,642.48
  4. Step 4: Simplify right side
    128,242.04x = 12,678,359,056.71
  5. Step 5: Solve for x
    x = 12,678,359,056.71/128,242.04
  6. Step 6: Final answer
    x = 98,862.74

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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.