Home / 157,101.20-235,712.28-72,904.40

Finding the Fourth Proportional to 157,101.20, 235,712.28 and 72,904.40

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Solution

The fourth proportional to 157,101.20, 235,712.28 and 72,904.40 is: 109,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,101.20 : 235,712.28 = 72,904.40 : x
  2. Step 2: Convert to fraction form
    157,101.20/235,712.28 = 72,904.40/x
  3. Step 3: Cross multiply
    157,101.20x = 235,712.28 × 72,904.40
  4. Step 4: Simplify right side
    157,101.20x = 17,184,462,346.03
  5. Step 5: Solve for x
    x = 17,184,462,346.03/157,101.20
  6. Step 6: Final answer
    x = 109,384.67

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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.