Home / 156,699.71-216,423.65-105,624.35

Finding the Fourth Proportional to 156,699.71, 216,423.65 and 105,624.35

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Solution

The fourth proportional to 156,699.71, 216,423.65 and 105,624.35 is: 145,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,699.71 : 216,423.65 = 105,624.35 : x
  2. Step 2: Convert to fraction form
    156,699.71/216,423.65 = 105,624.35/x
  3. Step 3: Cross multiply
    156,699.71x = 216,423.65 × 105,624.35
  4. Step 4: Simplify right side
    156,699.71x = 22,859,606,827.76
  5. Step 5: Solve for x
    x = 22,859,606,827.76/156,699.71
  6. Step 6: Final answer
    x = 145,881.62

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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.