Home / 102,685,216.32-153,680,615.28-99,921,723.12

Finding the Fourth Proportional to 102,685,216.32, 153,680,615.28 and 99,921,723.12

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Solution

The fourth proportional to 102,685,216.32, 153,680,615.28 and 99,921,723.12 is: 149,544,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,685,216.32 : 153,680,615.28 = 99,921,723.12 : x
  2. Step 2: Convert to fraction form
    102,685,216.32/153,680,615.28 = 99,921,723.12/x
  3. Step 3: Cross multiply
    102,685,216.32x = 153,680,615.28 × 99,921,723.12
  4. Step 4: Simplify right side
    102,685,216.32x = 15,356,031,888,919,402
  5. Step 5: Solve for x
    x = 15,356,031,888,919,402/102,685,216.32
  6. Step 6: Final answer
    x = 149,544,719.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.