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Finding the Fourth Proportional to 153,703.08, 212,078.16 and 93,305.52

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Solution

The fourth proportional to 153,703.08, 212,078.16 and 93,305.52 is: 128,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,703.08 : 212,078.16 = 93,305.52 : x
  2. Step 2: Convert to fraction form
    153,703.08/212,078.16 = 93,305.52/x
  3. Step 3: Cross multiply
    153,703.08x = 212,078.16 × 93,305.52
  4. Step 4: Simplify right side
    153,703.08x = 19,788,062,999.44
  5. Step 5: Solve for x
    x = 19,788,062,999.44/153,703.08
  6. Step 6: Final answer
    x = 128,742.14

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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.