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Finding the Fourth Proportional to 152,459.96, 210,389.03 and 87,931.88

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Solution

The fourth proportional to 152,459.96, 210,389.03 and 87,931.88 is: 121,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,459.96 : 210,389.03 = 87,931.88 : x
  2. Step 2: Convert to fraction form
    152,459.96/210,389.03 = 87,931.88/x
  3. Step 3: Cross multiply
    152,459.96x = 210,389.03 × 87,931.88
  4. Step 4: Simplify right side
    152,459.96x = 18,499,902,566.38
  5. Step 5: Solve for x
    x = 18,499,902,566.38/152,459.96
  6. Step 6: Final answer
    x = 121,342.70

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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.