Home / 129,246.16-178,368.08-74,809.32

Finding the Fourth Proportional to 129,246.16, 178,368.08 and 74,809.32

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Solution

The fourth proportional to 129,246.16, 178,368.08 and 74,809.32 is: 103,241.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,246.16 : 178,368.08 = 74,809.32 : x
  2. Step 2: Convert to fraction form
    129,246.16/178,368.08 = 74,809.32/x
  3. Step 3: Cross multiply
    129,246.16x = 178,368.08 × 74,809.32
  4. Step 4: Simplify right side
    129,246.16x = 13,343,594,774.51
  5. Step 5: Solve for x
    x = 13,343,594,774.51/129,246.16
  6. Step 6: Final answer
    x = 103,241.71

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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.