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Finding the Fourth Proportional to 153,502.16, 211,848.48 and 85,530.20

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Solution

The fourth proportional to 153,502.16, 211,848.48 and 85,530.20 is: 118,040.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,502.16 : 211,848.48 = 85,530.20 : x
  2. Step 2: Convert to fraction form
    153,502.16/211,848.48 = 85,530.20/x
  3. Step 3: Cross multiply
    153,502.16x = 211,848.48 × 85,530.20
  4. Step 4: Simplify right side
    153,502.16x = 18,119,441,804.85
  5. Step 5: Solve for x
    x = 18,119,441,804.85/153,502.16
  6. Step 6: Final answer
    x = 118,040.31

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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.