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Finding the Fourth Proportional to 153,681.52, 212,053.24 and 85,693.08

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Solution

The fourth proportional to 153,681.52, 212,053.24 and 85,693.08 is: 118,241.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,681.52 : 212,053.24 = 85,693.08 : x
  2. Step 2: Convert to fraction form
    153,681.52/212,053.24 = 85,693.08/x
  3. Step 3: Cross multiply
    153,681.52x = 212,053.24 × 85,693.08
  4. Step 4: Simplify right side
    153,681.52x = 18,171,495,259.58
  5. Step 5: Solve for x
    x = 18,171,495,259.58/153,681.52
  6. Step 6: Final answer
    x = 118,241.25

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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.