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Finding the Fourth Proportional to 158,468.01, 218,686.69 and 85,870.93

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Solution

The fourth proportional to 158,468.01, 218,686.69 and 85,870.93 is: 118,502.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,468.01 : 218,686.69 = 85,870.93 : x
  2. Step 2: Convert to fraction form
    158,468.01/218,686.69 = 85,870.93/x
  3. Step 3: Cross multiply
    158,468.01x = 218,686.69 × 85,870.93
  4. Step 4: Simplify right side
    158,468.01x = 18,778,829,780.96
  5. Step 5: Solve for x
    x = 18,778,829,780.96/158,468.01
  6. Step 6: Final answer
    x = 118,502.34

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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.