Home / 210,718.29-290,784.75-129,077.58

Finding the Fourth Proportional to 210,718.29, 290,784.75 and 129,077.58

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Solution

The fourth proportional to 210,718.29, 290,784.75 and 129,077.58 is: 178,123.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,718.29 : 290,784.75 = 129,077.58 : x
  2. Step 2: Convert to fraction form
    210,718.29/290,784.75 = 129,077.58/x
  3. Step 3: Cross multiply
    210,718.29x = 290,784.75 × 129,077.58
  4. Step 4: Simplify right side
    210,718.29x = 37,533,791,830.91
  5. Step 5: Solve for x
    x = 37,533,791,830.91/210,718.29
  6. Step 6: Final answer
    x = 178,123.08

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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.