Home / 102,316.40-153,802.65-72,937.70

Finding the Fourth Proportional to 102,316.40, 153,802.65 and 72,937.70

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Solution

The fourth proportional to 102,316.40, 153,802.65 and 72,937.70 is: 109,640.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,316.40 : 153,802.65 = 72,937.70 : x
  2. Step 2: Convert to fraction form
    102,316.40/153,802.65 = 72,937.70/x
  3. Step 3: Cross multiply
    102,316.40x = 153,802.65 × 72,937.70
  4. Step 4: Simplify right side
    102,316.40x = 11,218,011,544.91
  5. Step 5: Solve for x
    x = 11,218,011,544.91/102,316.40
  6. Step 6: Final answer
    x = 109,640.41

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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.