Home / 147,109.83-202,374.50-128,878.45

Finding the Fourth Proportional to 147,109.83, 202,374.50 and 128,878.45

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Solution

The fourth proportional to 147,109.83, 202,374.50 and 128,878.45 is: 177,294.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,109.83 : 202,374.50 = 128,878.45 : x
  2. Step 2: Convert to fraction form
    147,109.83/202,374.50 = 128,878.45/x
  3. Step 3: Cross multiply
    147,109.83x = 202,374.50 × 128,878.45
  4. Step 4: Simplify right side
    147,109.83x = 26,081,711,879.53
  5. Step 5: Solve for x
    x = 26,081,711,879.53/147,109.83
  6. Step 6: Final answer
    x = 177,294.15

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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.